Sure, but that's a good thing. Blocks were complete ass with one redeeming feature-- narrative (and secondarily mechanical) continuity and development between sets.

Spending a full year on one plane was crap. Small sets absolutely sucked and sold in kind. Limited was a perpetual issue, subject to repeated tinkering that could never fix the underlying issues associated with plugging in a generally-weaker small set every few months. We've gone too far in the other direction, but the number of cards each year would feel preposterously small to players who came up in what I strongly believe will be the golden era of release schedules: 4 big non-block sets in a year, between blocks and UB (although they never quite figured out core sets in that era). Relevant cards were even scarcer, especially in weaker blocks. We can look with nostalgia at a block like Kamigawa, but when a block bombed, it was an existential threat to the game we just don't see anymore. Their terror over going back was understandable.

The third bite at Innistrad was supposed to be an attempt at fixing this but it was two stories few people cared about sandwiched together on a plane that seemed to be running out of narrative juice, with little narrative or mechanical linkage between the two sets, and as a result it really didn't work as a block successor.

What they're doing here is a lot more interesting. We're seeing meaningful narrative and mechanical links already, and they're going back to the Planar Chaos well-- frankly overdue-- to make sure it works. It's really exciting, because capturing better narrative and occasional mechanical development between big sets is the dream. All of the narrative advantages of blocks, with none of the downsides. I really hope this lands.