Do you realise someone who plays couple of short sessions per week has probably the same requests, to not have their short play session interrupted by anal shit? And I'd guess those are far more numerous and are paying their bills.
Also not exactly sure what the passive skill tree has to do with interrupting grinding, is not even on the horizon on the list of offenders.
Someone who plays a couple of short sessions per week is either:
a) a complete noob casualfag (not an insult here) who wouldn't make it past "story mode" into maps in the previously-typical 3-month content cycle.
b) a rarely-playing pro who nevertheless knows the game quite well and can make significant progress in short time span.
Now, consider that the vast majority of the gross piece of shit abusable imbalances take place in the very endgame, t10+ maps and up. And, actually, a lot of those changes are only balanced in top-end gameplay (like, some gems' damage scaling with levels is usually nerfed towards lvl20 while being left unchanged at lower gem lvls, almost never it's nerfed flatly).
In contrast, I consider the current leveling (story mode up to maps) balance to be almost (act4cruel bleh) spot on - fairly hard for newcomers, but VERY rewarding and progressively easier the more one learns about the game mechanics.
Not just that, but a vast majority of skills that are mechanically utter trash in even mid-endgame (yellow-tier maps and up) are actually quite playable during leveling, even on a 4L.
Moreover, given that extreme damage-scaling and build specialisation also take place towards mid-endgame, it's normal for leveling passive trees to look rather "generic". As such, the game currently does not punish you for active experimentation with main skills during leveling; quite the opposite in fact.
As such, the noob casualfags will not really get affected by any serious balance changes because they simply never get to the point where those changes are noticeable.
And the knowledgeable players will always stay in the know how to properly sidestep the balance shifts.
In any case, "anal shit" never happens on the flyduring the already-ongoing league cycle. Only between them.
The people who bitch the most are actually the cookie-cutter casualfags (an insult here) who migrated from D3 and other shit decline games. These people are the ones that pick the most digustingly OP effortless meta build there is (the one that abuses the biggest amount of broken mechanics) and then proceed to cheese the game's content with it until their sweaty palms start bleeding. And if the game's balance doesn't change, they would keep playing that one build over and over and over again.
These despicaple people are the cancer that kills PoE. If they are gone to whence they came, the game will only benefit.