Hmm. I reckon gravel bares little resemblance to 80’s MTBing. For many of us mountain biking hasn’t really changed since the mid 80’s. We ride in the woods, on paths and tracks and in the mountains. About the only thing that has changed is that we go down hill faster and things break more often. But the latter is the same with all cycling .
Gravel isn’t that far removed from road riding without the cars. Of course I am using the word gravel properly , not meaning easy off road riding. That’s rough stuff or mountain biking.
As to tubeless being important. Not in the slightest.