I am a writer for Black Magic Gaming, color commentator for the Mana Drain Vintage League, and current Vintage MTGO streamer at https://www.twitch.tv/vaughnbros
Small samples are sufficient for telling you significance if there is a dramatic change. There isn't a dramatic change. Based on your numbers:
Number of outcome decks in top 32 is equal
Bazaars are slightly up
Shops are slightly down
Control/Gush is slightly down
Others are roughly the same
If Bazaar was that dominant now, I'd more expect to see it winning the tournament and getting more representation in the top 8. Only 2/10 in the top 32 made it to the top 8 (expected value would be 2.5/10).
The biggest thing for me is that the whole myth/fear of Dredge/Combo taking over the format seems to be debuffed to me by these last couple weeks. People haven't really added so many anti-combo / anti-dredge cards to their main decks to even make that happen either.
A planeswalker can be attacked, but also can't be disenchanted. This will make this effect stronger in some matchups, like against Storm, and weaker in others, like against Survival.
The uncommon walkers not being able to grow certainly makes evaluation different from a normal planeswalker. However, unlike creatures/enchantments, they all still have a very wide array of effects. E.g. This card has 3 distinct powerful effects.
There are a large number of planeswalkers that are great against creatures and dealing with things sorcery speed, one of the issues with playing a lot of walkers was dealing with these problems with supplements like a large suite of counterspells, these cards kind of address that issue to some degree. You still have the problem of the curve mostly starting on 3, but there are certainly options to deal with that.
Agree that most of them will probably just slot into existing blue shells as anti-mirror cards.
Its definitely still going to be a puzzle as to how to build a planeswalker control list that works against all matchups, but its a puzzle with a lot more pieces now.