The misinformation is to lock Reyna and hopes to rank up just by doing that, probably the biggest #1 worst advice you can give to any low-rank player.
The reality is if you're not learning agents while ranking up, by the time you reach any decent high rank like DIAMOND, ASC or IMMO you are just gonna look boosted because all you know is locking in reyna and "shitting" on bad aimers. In HIGHER rank everybody knows how to sit on an off angle and will 1 tap you as you swing. You have no more advantage as you did before in lower ranks, even in PLAT. Ill give you an example too,
This guy that I faced who locked Reyna dropped 24/18/3 with 32% headshot rate against me, realistically thats pretty good but if you look at his tracker. The only thing he can play is Reyna and when he faces anyone actually good which I like to consider my self, he is going to lose.
Its much better to actually learn an agent and grind up the hard way than to be lost and look like a idiot once you reach good lobby's.
the profile: https://tracker.gg/valorant/profile/riot/WILDFLOWER%23BE3/overview?playlist=competitive