According to the WotC polls, fighters have consistently ranked as players' favorite class, regardless of edition. So it's not surprising to see people saying that they like it.

They would have had to totally botch it to change that.
I think they did a great job. I tweak Second Wind for playstyle reasons, but I have no complaints about the class. I've played a hill dwarf battlemaster "monster-hunter" with 200 hp at 14th level, and I'm itching to play a human champion with no feats whatsoever.
I think a fighter's ability score increases are great, even without feats. If you are trying to increase their combat prowess, that's 4 more points that you can dump straight into Con, for an extra 2 hp per level, etc. If you prefer, you can use them to expand their exploration or interaction versatility by putting them in Charisma, for instance.
Action Surge is just straight up fun to use, and all of the subclasses have Fun Inside™.
As for "tendentious," call it what you like. I will always be very skeptical of the significance of a forum poll, regardless of what the general result is, because it falls prey to most of the worst difficulties such things possibly can: volunteer sample, unkown representativeness of population...
That's the big one. I'm always wishing we could get these online surveys up to the magic 2,000 number for better results, but alas, we can't seem to get enough lurkers to join the polls.
Fortunately, WotC own polls seem to be
well within the statistically significant sample size parameters.