... firstly, I agree that the rules are a mess, including the tyre rules, and I'm looking forward to a unified race series again....
I do think the current tyre rules bring something though. Currently, like Aleix previously on the ART, Dovi and Iannone can stick their bikes up the pointy end of the grid during qualifying. As mentioned by others, in the race they suffer with the tyres and go backwards... but at least we get to see some overtaking, and when the planets align, the possiibility of a Ducati podium.
What's the alternative? If you let all the teams use all of the tyres, it is quite possible Dovi will never break through the third row against a soft tyre shod Yam or Honda, even if they only get one hot lap out of it.
You could allow the open teams full tyre choice, but not Yam or Honda? But then, I think that might be taking the p1ss a little bit.... and Bridgestone have not committed to supplying that many available tyres anyway, as far as I am aware, and will not be that bothered about going beyond the call of duty, given their imminent exit.
The current rules are a compromise, albeit a not very satisfactory one, but I struggle to see a viable, fair and satisfying alternative.