It's interesting seeing "random encounter" coming back in grace, I have the impression that they were universally considered as a "bad practice" for at least 2 decades, and now i see people defending them again. Is it an effect of both the OSR and Rule-light zero-prep ? Or is it that I spend more time on english speaking communities dominated by more "classical D&D perspective"
My issue, and why I (quickly in my GM career) stopped putting "random combat" is that, as a "low combat GM" random combats end-up interrupting the game for no reasons, and end-up being either "clay shooting practice" (So a few easy ennemies to roll some dices without bringing anything to the story) or a "catastrophic event" throwing all the PC plan away as they walked injured out of that fight and will need a lot of in game time to recover which basically breaks the game. If there is a combat, the PC called for it, either by their action or their non action, but not just by "simply existing in the game world"
However, I can totally see how for games with more focus on combat, it can still be interesting, just "not my cup of tea"