Apparently Chandelure is crap, so yeah, not sure why they get immediate CHR/CSR (beyond the fact that Misty and Cynthia are super popular) whilst Fusion Arts and Star Birth cards remain untouched
It's easy to see why these cards are so pricey, but there is a touch of fatigue that sets in when they appear in too many sets back-to-back
In this case, Michaelangelo would become completely unblockable
This was mimicked stateside by being a part of 24 of the top 64 decks of the 2018-2019 Madison Regional Championships, with the exact same list placing 2nd, 3rd, 6th, 10th, 23rd and 30th.
It also opens the door to niche synergies where you reuse creatures with activated abilities like Loran of the Third Path or squeeze more value from your mana dorks by casting spells at instant speed