You couldn't be more wrong. BetaFlight is so far ahead of cleanflight. Anyone worth a crap in this hobby not using Kiss is using BetaFlight. In my experience cleanflight has more issues than BetaFlight. I just can't stress this enough. I wish people that don't understand this stuff wouldn't confuse newbies by giving them incorrect info.
First off, you're necro-posting. Check the dates. There's no rule against necro-posting, but starting an argument with one is a bit embarrassing, IMO. It's easy to be "right" with posts that are both months and several *flight versions old.
Second, Your argment will depend on the board -- F1's don't handle the latest versions of Betaflight well. I can see the argument of "why buy F1's, they're out of date", but for those who are flying airframes with them (or RTF's that carry them), getting the "latest" may mean switching to the other branch or paying to replace a perfectly functional board. I follow the "fly what you have now" philosophy, rather than "wait until you can buy something better".
Third, the average novice pilot isn't "worth a crap". Ask them, if you want to embarrass them. Most are quite aware of it -- I know I was. They'll be great if they stick with it, and by that time, they will be able to make their own mind up about what they fly. Just like giving a hellcat (the car) to a teenager with a learning permit is a great way to make scrap metal, Flying what the "best" pilots fly setup like they fly it is a great way to make carbon scraps. More features is not more better. They need stable and functional, not prototypes of something that might be cool but may also act erratically.
Fourth, the "gap" likely change shortly with Cleanflight 2.0. How much? That remains to be seen, but again you miss the point of Beta/clean flight. Betaflight is testing the boundaries -- good *AND* bad. If you *are* the expert pilot, and you're aware when a betaflight ROM will drop you like a rock, Rock on. Cleanflight is implementing these features when they've proven good, in a stable format. Is cleanflight moving too slow? Now that's a position I could agree with.
Finally, Welcome to the forum . . . Genuinely, welcome . . . Seems an auspicious start, trying to argue with the past. We tend to be more friendly around here -- granted, some more than others -- but you might want to be a bit less assuming when you fly off the handle . . . in your first post . . . because while we're a welcoming bunch, hostility generally isn't welcome here.