Releasing LR6 on Apr-21 while adding a high visibility feature in CC only less than 2 months later is a slap in the face of LR6 paying customers, plain and simple.
Sorry, I don't feel being slapped in the face Bernard.
I have a perpetual license to LR6 (paid 75 € for it)
I don't use PS that much and my old (perpetual licensed) CS3 is doing all I need from it.
Now I don't get global dehaze and no black/white point adjustment in the masked controls until LR7.
I can live with that, I knew what I was buying when I pressed the button.
To get it I need to shell out 12 €/month, on a 18 month cycle that would be ~140 € more vs. the perpetual license.
That's a pretty steep price for a few features that are nice but not essential. I'll wait for LR7 to get them.
Maybe at some point in time the CC additional features warrant the extra cost for me, but at the moment almost tripling my use cost of Lightroom is not worth it.
Obviously if you want/need the latest photoshop in addition to Lightroom these economics no longer hold water, but for a LR only user I think this makes sense.