Yeah the more content also makes the universe feel more disconnected.
I also think the Multiverse has been poorly explained so far. We've had Loki, No Way Home, and Dr. Strange - yet each one of those, imo, defined the multiverse differently.
In Loki - they introduced the TVA pruning variants and He Who Remains determining the fate of the MCU timeline, and then it ends with all the other timelines are colliding.
In No Way Home, you had a spell that opened up branches to other Spider-Men, and also the villains, but nobody else. And no TVA to be seen.
In Dr. Strange, we learn that traveling to other multiverses risks causing an incursion event to wipe out both universes, yet traveling through the multiverse is the power set of America Chavez? And not even a passing connection to Loki or the TVA mentioned.
Ironically I feel like What If? gave the most simple explanation of the multiverse that made sense.