Why do people stress out over rank so much??

I've seen plenty of MM and balance complaints but this recent holiday challenge has brought it out 100x more. The game is in ALPHA not even beta yet. We've had 1 "rank reset" (which only fixed visual ranks, not even the actual mmr) but how many game changing updates??

Ranked was released when we still had 4 lanes, 16 item slots, and 22 heroes for reference.

They're also likely going to wipe ranks before launch so what you do now probably wont even matter in the long run. So why not try new stuff with others who are doing the same?