If you manual update infrequently you are leaving a period for other people to get burned and flag issues before you pull the change, even if you don't look into a thing yourself.

If your update is the simplest version, a "git pull" -- then you're incorporating commits that have not "stewed" long enough for anyone to be burned. You might win the lucky ticket! (Saying this as someone who rarely updates nvim plugins, out of forgetfulness, not principle, and when they are updated I believe it IS a simple "git pull"...)

With a plugin manager you can also update infrequently