Maybe it's the fact that you're hating on a game before it's even released/before you even play it. Despite it seemingly holding elements similar to GFW (which you called good) and the photography games (which you also praised). To me, this shows that you're already so biased against the new games that you will hate on this one no matter how it turns out.
You criticized people who are satisfied with any Touhou game, which I would agree with, but automatically disliking new Touhou games is the other side of the same coin.
This is a valid point I would like to address. The PV we have been shown shows the player teleporting past every bullet, or clearing them out completely, turning invincible for a short period of time to skip past the walls. This is not what you do in the photography games or GFW. Yes, you clear out bullets with your lense and ice. Yes, you sometimes specifically target a wall that is in the attack to choose to use your ice/picture. But what you don't do is do nothing and wait for the next wave to come at you. StB and DS all send constant barrages of bullets, not just waves of walls or a single trail of bullets following you. You were dodging inbetween the walls you cleared out. It doesn't seem to be the case right now.
Of course, assuming this game is constructed like StB and DS, we were likely just shown a few attack from the early stages and I personally hope that this changes significantly in the later stages of the game. But hoping is all I can.
As for "the other side of the coin" it's just that after the TD demo as well as the DDC demo I had high hopes for each game respectively, but was let down because stages 4-6 were actually worse than the early stages in both cases, which I found to be very disappointing. I can't hype myself up like many other people.
Naturally, judging this hastily may have been a mistake on my part. This isn't a maingame, but a spinoff - a sidegame. ZUN hasn't really missed with those yet, seeing how StB, DS and GFW are all good games, so chances are this may not turn out as badly as the last couple main games did.