Hussar
Legend
No, it doesn't. Not in 5e. At least nothing over CR 1 anyway. A fighter, at best, could do about 30 points of damage with a critical hit. And, again, we're talking about a 1 in a several thousand event vs "inevitable" where the ranger should be bypassing about 50% of these challenges, at the very least.And as long as it's only some of the time, that's not a big deal. Same idea as a Fighter one-shotting some opponent or other with a major crit-hit - sometimes things like that just happen.
And, it ignores that the ranger doesn't actually have to do anything. That fighter, at least, has to attack something. The ranger does this just by being there. There's zero engagement with the game. Winning the fight because of a lucky critical is something the group will high five about and talk about afterward. The party's ranger turning to the DM and saying, "We're here" is never something the group will give the slightest toss about.