It's like an unreliable tool, I've used it and got something done, and hoping I'd have easier time with something new. I've used it for a time, got fond of it, but still looking for a replacement.
I love the fan club though. It's like, did you drive a Lada back then? Me too! Oh the nostalgy.
Not everything old have to be scorned. It does a good job for being invented such a long time ago. Of course it predates some instruments that are better in a psychometric sense, but it introduced a lot of people to the concept of personality.
So, I enjoy it for the framework it provides for talking about personality, even though there are stuff it can't do, like telling if someone is surely some type, what is person's "true" type, do types stay forever and things like that.
Given the variability in results, and poor correlation function test results to function orders lifted from the MBTI charts, parts of it can't be taken seriously.
Srsly, folks who repeat "MBTI is rubbish", take it apart and use what's salvageable. You can talk to a lot of people about personality with using this instrument as an inspiration. We'll have even better instruments soon, tho I doubt if any other instrument is going to get such a huge support - and such a huge discussion - any time soon. Of course, I get your frustration of what seems like undue trust in MBTI. I'm sure many people will find their own disillusionment about it without outside help, sooner or later, with the speed they're comfortable at.