To be fair to VSL, they are not the only company with plug ins or DAWs not ported, Pro Tools native is still an open beta, and Reason Studios isn't even in beta. Then there's Air, PSP, NI, Audio Ease, Nomad Factory etc.
You'll notice all these companies are more than 10 years old, technical debt piles up, NI admitted that some of their plug ins have 15 year old GUI code. Reaktor their oldest product is last in line for native support. Who knows if Air or Nomad Factory will ever port? PSP have been going one plug in every couple months for a long time now.