No.
I can't really spite people for disliking things in the new edition of FR (even though I like alot, though not all, of it) but this is a misinterpretation or straight out lie.
Let's look at the development team, shall we, who divided the work roughly equally between them?
Bruce R. Cordell
This is the single most reasonable designer to levy the charge against, but only because he's had little work in FR. He's also the one who's responsible for many of the things old-school FR players dislike the most - such as the new importance of aberrant creatures like aboleths (or as some call them, "tentacled beasties"), which, looking at his bibliography, seems to be a preoccupation of his. However, he's an FR novelist, which if anything should show an interest in the setting. He also worked on the Underdark supplement for 3rd edition, so he isn't alien to the setting.
Ed Greenwood
Ummm... anyone claiming Greenwood hates FR has as much credibility as someone claiming Lucas hates Star Wars (not to say that Lucas hasn't done some things that fans such as myself vehemently dislike). Greenwood
created the setting and indeed, comments on forums suggest that he's responsible for much of what's in 4e - such as the return to player-focused FR or the primordials (their role in FR ties into an idea he'd had running around for some years called the "Sleeping Gods"). Not to mention that he's responsible for an entire chapter of the book - the one devoted to the new continent Returned Abeir. Greenwood very much likes FR and, from all indications, very much likes 4e FR.
Chris Sims
Chris Sims is somewhat unfamiliar with the setting, much like Cordell, but he's worked on a few sourcebooks such as The Shining South prior to his work on the FRCG. Overall, he's pretty new to WotC's roster in all regards, not just for FR. He did, however, work on Eberron in 3.5, which may be part of the reason why he might be interpreted as hostile to FR (which is ridiculous, if you ask me).
Rob Heinsoo
Rob Heinsoo was the creative lead for 4e in general so I can understand why those who don't like 4e would level blame against him. But he's not hostile to FR. In fact, he was one of the lead designers for the 3e FRCS as well as its Monstrous Compendium companion.
Logan Bonner
Bonner's another outsider imported from Eberron. This hardly means he's actually hostile, however.
Robert J. Schwalb
Robert J. Schwalb's originally from Green Ronin but he transferred over to D&D in late 3.5 for work on Tome of Magic and Fiendish Codex II. His work in 4e seems focused primarily on magic and its use, given his work on AP, AV, and DP. He doesn't appear hostile to FR, but I will admit he's not very experienced with either.
Rich Baker
Not to be confused with the similarly named Keith Baker and Rich Burlew

. Rich Baker's been with FR since 2e. He's openly devoted to the Realms and openly supportive of it. He interacts with the fans on a regular basis and is understanding of their issues with changes to the setting. The only reason I can imagine someone would say he hates FR is because of his openly stating some issues with a few of FR's pre-4e characteristics (such as its transplanted Earth cultures or the sheer number and the concept of Ao).