Having been to hundreds of Chabad Houses around the world, I can't even recall a handful where I've seen Yechi yalmulkahs.
Not that I have a problem with it, but calling it common is silly.
To be fair, for example, on the 'invitation
@ExGingi posted, it said Yechi on the bottom, that was probably barely noticed by the Chabaadniks here, and was glaring to those that are not Chabadniks. I think that's
@aygart point. like
@churnbabychurn said, there's language used in Chabad that strikes outsiders as odd, but is part of the vernacular inside.
I'm blessed to live in a very integrated community, and flit back and forth from the Lakewood Kollel to a Nusach Ari minyan, but for New Yorkers, it's very 'other'.
This is why I live OOT. Imagine trying to sell your 1.5 million dollar house in BP when moshiach comes and there's a million houses on the market in brooklyn.
OOT, the market will barely notice.
depends on your OOT. the whole Hancock Park for sale will be noticeable.