For now it will be up to Poster 1 to decide for themselves if they are offended for changes made in their post, within limits which include convincing the moderator that their grievance is reasonable.
If you don't know Poster 1 well enough to know they won't be offended by your "FTFY" quote alteration then you are better off just not doing a "FTFY" type response given the fact it is very easy to reply to Poster 1 with the response you intended to communicate all along:
This will cut down immediately on the "I'm misunderstood" claims of the individuals who are altering the quotes in question.
Just to reiterate, mods will not be actively canvassing the forum for misquotes to sanction. This is merely a pro-active matter for the poster in question and only the poster in question can take issue with it.
Poster 3 cannot enter the equation on behalf of poster 1. Poster 1 may find the FTFY quote to be in good spirit and perfectly fine in which case it is a "No harm no foul" outcome.
But if Poster 2 and Poster 1 are less than chummy, then Poster 2 invites risk upon themselves by misquoting Poster 1 should (1) Poster 1 take offense to such misquoting, (2) Poster 1 reports the post through the formal channels, and (3) the moderator agrees that Poster 1 has reasonable grounds to take offense to the specifics of the misquote itself (no frivolous sanctions on technicalities or so on will be allowed).
Each reported instance will be handled on a case-by-case. And Poster 2 can appeal their sanction in the Moderator Discussion subforum as a means to further ensure point #3 above is observed.
The purpose here is not to eliminate the jovial nature and utility of the FTFY meme. This is not intended to put a damper on "snipping" text in reducing the text-block which is quoted (provided it is not being done in a way that is easily interpreted as a misquote).
Rather, the purpose here is to eliminate the employment of that meme in the pursuit of unproductive character attacks and intentionally harmful mischaracterizations as showcased in the OP of this thread.
Since it is Poster 2 who is doing the misquoting, the onus of prudence and responsible misquoting is on that poster's shoulders. Caution is theirs to take, or not, when crafting a FTFY type post, but Poster 1 is the only to say if it is a problem or not.
Easy way to avoid it would be to avoid misquoting. Next easiest is to make sure you are chummy with the person you are misquoting and restrict your misquoting activities to those folks for whom you are confident they will receive your misquoting of them in good spirits.
Administrator Idontcare