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Easy, they delivered the news poorly.
They should have announced the bad news along with Pokémon home during the last direct and made it very clear what was happening and why instead of leaving things like megas and zmoves being gone for good up to a rushed translator working under pressure.
Comparatively, Fire Emblem had a new animated trailer during E3 that looked pretty good. Its not surprising that you found it more appealing than finding out your favorite Pokémon may or may not be usable in SW•SH in any capacity.