You really have 3 options. Make using the spell worse. Make it better. Or make it equal.
Now if you proposed some way to telegraph when it would be better or worse or equal I could get behind that as a meaningful decision point for the players, but when your only reaction is -‘make it worse for the players to have attempted it than not’. That’s a hard pass. I think that’s where 99% of the pushback is coming from.
If I have an issue with any spell I have a discussion with the group and talk about why it's a problem. In my campaign, sometimes the hut will be beneficial, sometimes it won't. But it won't be automatically guaranteed to be successful.
The example of the hobgoblin mercenary army was from a previous campaign. I let the players know that they were aware of enemy patrols and that hobgoblins are organized and militaristic. So when they set up the hut they were careful when they chose to use it and took extra steps to camouflage and picked a location less likely to be noticed. That won't always be the case though, taking a long rest when the enemy is likely looking for you is always going to carry at least some risk.