By the end of this gen HDMI 2.1 will be the TV standard. All but the very bottom garbage tier of TVs will feature HDR, VRR and 4k. 5 years is a long time. Nobody will buy a 1080p TV without HDR then. VRR will just become another standard feature even if most people won't use it because the panels will be ubiquitous.
I like your optimism, but HDMI 2.1 port doesn't mean the tv will support VRR. I'll believe it when I see it. I'm still waiting for 1080p to become standard by my cable company, 'enjoying' 7 mbps mpeg2 720p/1080i content since 2006. At least most is in proper widescreen nowadays!