Limit Break Dancing
I think Perception is overused in general. I'm not sure where I saw it exactly, but I remember something in the rules about the DM using Arcana instead of Perception to find magical traps, and Investigation checks when searching for clues, and Survival for finding tracks, etc. But I think a lot of DMs just default to Perception. Players love this, of course, because it's everything they want to optimize, in one easy-to-optimize stat.In a situation like this, I think it's important to consider whether the way passive Perception is being used at the table is leading to it being overvalued in a way the game doesn't intend. Same goes for the Observant feat. If that's seen as a must-have, then it could be the trade-offs and risks associated with the tasks being taken and resolved are not in line with what the game says. Often this happens when the DM treats passive Perception like an always-on radar outside of combat, pinging traps and secret doors and other hidden objects without any meaningful choice by the player during play.
Observant is taken in my games almost never. This isn't because passive Perception is unimportant, but because if you want to have a chance for your passive Perception to apply, certain criteria must be met including being in the front rank of the marching order and/or engaging in keeping watch (or trying to notice traps or searching for secret doors) at the cost of not doing other things that may be useful in context. Being in the front rank exposes the character to risk. Plus, there's pressure from making the investment in the feat or whatever that you can't focus on any other tasks the character might otherwise be good at. These trade-offs and risks make it a meaningful choice during play, not just a choice to be made during character creation.