We can joke, but 17 individual plugins IS much nicer and quicker to work with in a DAW than some container with limited versions of those 17 plugins crammed into a clunky UI and all sounding 20% worse than your favourite emulations. The DAW is a container, we don’t need another one inside it.
All in one plugins are a fetish and there’s a reason why they are all by and large bad. Something has to give with them, and they either accept the limitations and lean into them (HX Native) or they just mindlessly add waffle and bloat (Amplitube/Amp Room/Revalver/S-Gear). God knows how long amp sims have been a thing, but it says a lot that no one has managed to nail it yet. It’s equally true for racks like T Racks or Slate VMR which basically no one speaks glowingly of either.
Massive Passive with a Fabfilter UI is basically just a Fab Filter EQ though (or if we want to get more finicky, DMG Equilibrium in parallel bands mode). Once you strip away with original layout you lose most of the experience of using the Massive Passive to begin with - that plugin especially depends on having the same layout as the HW. Pulsar did a model of it with a graphical mode, I’m not sure if you’ve tried it, but if you ever do, I am certain you’d just think “well I might as well just use Pro Q if i’m working like this”.
The “lack of meaningful feedback” in that plugin is precisely what makes it great - the way the bands passively interact mean the settings you dial in don’t really end up sounding as extreme as what they look, and it makes you dial things in in a very unique way because you’re listening more and looking less. If you do it with a graphical mode, you completely miss that experience.
I’d even say the same with the API plugins - the limited number of bands, friction of the knobs being the way they are (and 2dB gain steps) makes your EQ moves much more purposeful. If you take those away and just have the curve behaviours and non linearities with a generic UI, it’s not an API any more. It’s the sum of everything. Waves, Kirchhoff, and Equilibrium all do a take of that and I basically only ever use their default curves in those plugins.