Yes
"Alongside the 5-stack changes, we are also removing 4-stacks from the Competitive queue. These types of groups tend to leave the remaining solo queue player with a relatively poor play experience, and we believe that removing this option will result in a significant reduction of overall toxicity reports."
https://playvalorant.com/en-us/news/game-updates/valorant-patch-notes-3-10/

I always had my trust factor low AF when i played CSGO, and it was an absolute NIGHTMARE. People report me thinking i have cheats because im just good, and from then my lobbys were 100% vs cheaters. Even my friend ask me to make another fresh acc because playing with me on my main was literally IMPOSIBLE
Trust Factor just penalize you if you are good and makes the experience of the game the worst of your life

If it is not a 5-stack, u will have to use a smurf 100%, and maybe some of your begginer friends get absolutely shit on by people of the highest rank of the group, or even if they are a little bit lower ranks, so I dont think this is going to do that much of a difference at all, not even 50% reduce smurfs imo

I prefer to get a 4 stack
At least you know that 4 will "play as a team", even if they are toxic to you because you miss a shot, just mute them and play your game
But its WAAAAY better than having 4 stupid persons being even more toxic, fighting to show who is best IGL and later, playing alone not helping anyone, or even troll the match
BTW, this is not gonna fix toxicity, people are going to be the same

stupid change imo