To be fair, I wouldn't lump Buddhism in with other theistic religions. Of course it can be, but a lot of schools avoid any form of theism. Plus, it's almostvdefinitely the least arbitrary and hypocritical of the Big 5-7
Eh, it's still based on completely unfounded, unsupported, and nonsensical ideas. Whether or not there's a personal god doesn't make any real difference IMO.
I mostly agree with you, but the act of using meditation to increase one's mental well being, in particular, is not an unfounded or nonsensical idea. It may have been when it was first described, but we have scientific data now that shows that meditation can be pretty beneficial for people.