If you recall
scry & fry from the old days it has a lot of similarities. I find that in 5e there are a lot of players who tend to use stealth like a ten foot pole in tomb of horrors but with better range & capabilities. expertise stealth & 20 dex is basically at will undetectability against anything that doesn't amount to rocks fall levels of monster CR so they act like it. The entire group stays behind & mob goes to "scout" refusing to take ant action but continuing even when bob is told how he feels that he's over extended & too far from the group.
Everyone knows that bob is perfectly safe & in no danger from anything that doesn't allow them to call out the gm for being adversarial so it plays out like the extreme ends of old school scry & fry no matter what the GM tries to todo redirect the session held hostage. The new stealth rules give the GM lots of room to allow reasonable scouting with stealth
and a significant number of ways to casually make clear to players that expecting to go further stealth based scry & fry is not an option without the GM coming off as adversarial just because there is an empty hall/multiple lookouts with multiple vantage points/a neatly trimmed lawn/etc where those sorts of things seem appropriate.