Duplicates my thought, and I am not particularly a "fan" of Pathfinder (recently being far more interested in Basic Fantasy and 3.5 as-is).
A lot of the reinvention didn't appeal to me at first and I haven't followed it since. I wish them luck, but I let dragon/dungeon lapse before the changeover so I have no interest in their work.
When folks were (understandably) upset about shennanigans with WotC;
1) claiming that rumours the 4e announcement was close were false,
If you went back, you'd see they did what they said, and said what they did. Maybe they didn't give exactly a year notice, but you do have to factor in that 4e rumors started in 04-05 and were continually refuted.
cancellation of Dungeon & Dragon,
Also, Dragonlance. Still, no lies or unprofessionalism there, so not a big deal.
broken promises about tiered licensing, broken promises about the DDI (when, and what it could do), and problems with the GSL,
This I think is there biggest diplomatic hurdle, DDI for the mainstream, and GSL for the 3P.
What WotC does impacts me; what a 3pp does, except in the case of what they produce, or in the case where they champion something of use to the market/industry/hobby....like Clark with the GSL and the APG....really doesn't affect me much.)
(Never hurts for a 3pp to be professional, though.

)
RC
The main thing with the smaller 3PP is that their audience is smaller and more directly connected. Most of Paizo's fans are probably on their site and in contact with them via that site or this.
For me, I just didn't see the variety I wanted to see, so I faded. The main big screwup for me was Age of Worms Overload (this was a long time ago now...)
Paizo promised this before the path started, people bought into the path based on it, and it was continually shifted back. Paizo's folks were apologetic at first, but the rabid fans were quick to attack folks, calling it a "free product" and telling people they were wrong to be mad about the broken promises. After a while, Paizo took up the stance of "it's a free addon anyway" and the responses became more ambiguous and less consoling.
Some remember further back though;
1) The addition of Polyhedron
2) the REMOVAL of Polyhedron...
3) The ditching of the Annual (even though folks had paid for 13 issues a year, no refunds/credits were forthcoming afaik)
4) when Dungeon went from bimonthly to monthly, they shifted the subscription from "a year" to "12 issues" and then tried to tell people they were getting more.
There's more of course, but it's besides the point really. Folks that were/are offended by such things know, folks that think it's unimportant don't care.
The other thing I think the rabid fans are overboard on is giving credit where it's not due. When the magazines were canceled, Paizo offered options and folks applauded.... but they weren't being "gracious". They had to refund the remaining money regardless. They were giving you options to let them keep your money. A wise business decision, and in no way a BAD thing, but certainly not worthy of rabid praise.
Anyway, I don't mean to bash Paizo with this stuff, other than them screwing me over with Overload (starting a campaign based on promises not kept sours me), they treated me well enough. (Two lost issues were quickly replaced.)