Funny how some developers and hardware manufacturers (U-He, NI, RME, Apogee, MOTU, AAS, Synapse, Plogue, Korg, Spectrasonics, etc.) managed to be compatible with 64bit Catalina pretty quickly, while others were just spending time complaining and finding excuses, instead of updating their plugins and drivers as they should (especially that Apple announced the move to 64bit like a year or so before it actually happened)...
For me, if a company is not up-to date with products/drivers on Mac, I'd rather not invest in them at all, cause they do not take the platform seriously enough to be trusted long-term. Some even outright admitted to hate Apple and Apple users on public forums - like MELDA did on KVR.
It is not Apple, who is disabling your plugins, it is lazy or inept developers who can't get their crap together and don't give a damn about Mac platform...
There is no reason to drop 32-bit support so it is Apple their fault. It is Apple that tells everybody that you cannot have 32-bit apps.
And the Access Virus TI is a bit more complicated product then a standard plugin as it also depends on other 3rd party drivers which they have no control over.
Windows and Linux do a much better job in that sense as they do not break compatibility for no reason.