The Last Remnant: I really can't understand all the criticism and the hate. I find it to be an awesome game on almost every aspect. Yes there are a lot of loading screens but it's only for a bunch of seconds. Another stuff that I cannot get a sense of it is the difficulty: how is the game hard? I am still pretty early in the game (lvl 17 iirc), but all it's going smooth.
The Last Remnant came out in the late 2000s well into Western games journalist's seething hatred for all things Japanese. You had reviews coming out literally saying "it's only for Japanese weirdos with no life".
A slightly more valid criticism is that TLR does not explain its mechanics and what it expects out of the player very well. The usual way the player expects to beat a JRPG (as conditioned by Final Fantasy, Xenogears, Suikoden, Pokemon, etc) is to grind mobs and become very powerful and then crush story fights. Well in TLR, you are actually punished for mob grinding (unless you execute a very specific kind of farm in the volcano level way later on the game, when you mass pull all of the beetles in the level into a single battle), as your battle rank (the level scaling of the mobs) will rise faster than your characters are growing. Meaning that players who went to their usual strategy of level grinding quickly made their game too difficult and got walled by Gates of Hell, the first very difficult story boss of the game. IIRC the game's tutorial only briefly namedropped the battle rank thing and didn't emphasize the full implications of this mechanic and tell the player to not attempt levelgrinding.
Even if players do not level grind, they usually encounter frustration when they reach the very tough Gates of Hell boss fight and don't know how to beat it. People softlocked their save because you cannot leave that area until you beat the boss, and ofcourse there is the issue that you can't levelgrind until you reach the volcano, so people can get stuck and don't know how to get past that boss so they put the game down there. And then for the lategame superbosses like The Fallen, you need to have trained at least two specific characters to have learned the Cachexia spell to be able to beat The Fallen within the 10 turn hard enrage timer, but you can only have learned the Cachexia spell if you had ahead of time knowledge and had acquired those specific party members and had been training them in a very specific way so they would learn the Cachexia spell by the time of that boss fight.
Lastly, the RNG is very frustrating. TLR is a 100 hour long game but the story is only 20 hours max. The other 80 hours of the game is side quests, and all of TLR's sidequests are about going into a field and either killing X number of monster that has a random chance to spawn whenever you zone into that map, or farming X number of mats from a specific monster which have a chance to spawn (sometimes from a monster that has a chance to spawn whenever you zone into the map). So the 80 hours of sidequesting quickly becomes extremely tedious as you zone in and out of maps and walk all the way to the end of a cave only to find that the monster you are hunting hasn't spawned, so you have to walk all the way back out and rezone and hope it spawns this time, and then when the correct monster finally does spawn you kill him only for him to not drop any of the mats you need to complete the quest. Rinse repeat for 80 hours. Not fun. The game is thoroughly unenjoyable to play without the TLRplanner mod to force spawn quest mobs and to force drop their entire loot tables.
EDIT: I forgot to mention, that the original release of the game was actually pretty bad, having a lot of features that the PC port would later add, and had a lot of bugs. So that impacted reviews and gave TLR a bad rap that stuck around even when the improved releases came out and people did not bother to rereview the rereleases, presuming that they were the same experience. TLR was also not available on Playstation, which was the JRPG console. Most JRPG fans weren't going to drop hundreds of dollars (especially after the 2008 recession) to buy an Xbox (or a $1,000+ PC) just for two JRPGs, so lots of people heard of TLR's bad rap and then that was the reputation it was stuck with.