It is the greatest D&D-based RPG of all-time and the 4th greatest RPG of all-time.
Bethesda has nothing in top 100.
The words of a philistine. Considered on its own it isn't a terrible game but it was a terrible D&D adaption. What came before and after were miles better, the Goldbox games, Temple of Elemental evil and even Baldur's Gate 3 is a better adaption of the ruleset than Baldur's Gate was.
Bethesda has never made a good game.
Bioware made a couple of quality games 20+ years ago.
Bioware made one half-decent game and then kept attempting recapturing what made it slightly more than mediocre for the rest of the company's existence. They applied more but terrible action elements, they tried making it a singleplayer MMO, they gave it a coat of Star Wars and Wushia paint those two times, they badly ripped off George R. R. Martin and Warhammer while they were badly ripping off D&D with Dragon Age. The joke is that the original game was never that good, they just didn't know how to make anything else.
Bethesda was always an innovative company. They have some touchstones that they stick to, but during their early games anything went and up until they were bought up by Microsoft they still tried new things with each release. Arena was an entire fantasy world on eight floppies or a CD-ROM. Daggerfall took that and gave it more flavor and improved the richness of the experience, it was one of the most ambitious titles ever released. After that they took the Elder Scrolls series in fresh new directions by making one pure dungeon crawler with Battlespire and an action adventure game (what Bioware should have been making) with Redguard. Morrowind changed direction again, trying to combine what made their earlier games great with a smaller and hand-crafted world. In Oblivion they tried to make that world come alive. This streak continues until just recently. A large part of their customer base wanted something like the TES series but online, but another company made the TES online game and it was made in a engine without as much fidelity as the main series had. In response they made their Fallout online game in-house and using existing Fallout 4 parts, which had nailed a good gameplay loop and decent action gameplay.
Before they were eaten by Microshaft they were working on a new IP featuring things the company has never done before. You can say what you want about Todd, their greedy monetization schemes, and about how shallow the experiences they offer are. That doesn't change the fact that they still are a company that after its founding 34 years ago still retained an unique culture and made games that no other studio to this game has truly been able to compete with.
There is a reason why Bethesda games are so heavily modded and it's not because they are broken, but because they offer a playground of systemic gameplay with adequate core mechanics and gameplay loops. Bioware never nailed the gameplay, relying on a broken twitch adaption of D&D from the start and then threw anything they could think of at the wall to make their samey story and structural beats actually be enjoyable to plow through. Bioware games are always enjoyed despite the gameplay. The only good things I have to say about the gameplay of the BG series is that it's over quickly if you know what you're doing. Dragon Age and Mass Effect were even worse. The only time Bioware made something of note was with Neverwinter Nights, because while that was still a terrible Adaption of D&D it gave players a toolset to play around with and used multiplayer to get closer to the collective storytelling experience of D&D. The actual game was a dumpster fire, but much like with FRUA that was less important.