I think I share many of the negative opinions here about the direction Dynavap has gone, but I kinda tuned out of their developments a few years ago as I saw things getting worse.
I managed to find 3 SS 2018 tips from VapeWellness a while back, so along with another 2018 tip I already had, I've been using those on my custom stems. I did checkout the last M and really didn't like it so gave it away.
I think it's easier to ignore Dynavap considering all the amazing 3rd party options we have now. I've got Aezennwood and Glass Charlie stems which are my daily drivers and a Simrell one for when I'm out and about. Keeps me happy enough tbh.
The vault is cool though and I'm considering whether to buy some more 2018 M models for the tips.
My main regret is giving away my original M, I don't know if my memories are rose-tinted, but I remember that tip as being one of their best.