I have no skin in this race either way, I don’t really raid other than LFR and I do very few M+ runs.
That said I’d like to know where some of these assumptions are coming from? The post only mentioned adding a new Progenitor affix. It said nothing about adding all the M+ affixes or timers.
Now if they try to turn raiding into essentially mega M+ then sure bring out the pitchforks, especially if it’s not an optional difficulty toggle. But otherwise it might be better to see what the design is before writing it off completely.