Steam Deck sales drop hard following the Nintendo Switch 2 announcement
Steam Deck sales drop hard following the Nintendo Switch 2 announcement

Steam Deck sales drop hard following the Nintendo Switch 2 announcement (updated: Valve fixed it)

Steam Deck sales drop hard following the Nintendo Switch 2 announcement
Steam Deck sales drop hard following the Nintendo Switch 2 announcement (updated: Valve fixed it)
That means nothing. Nintendo and Valve are not in direct competition.
If deck sales actually dropped, it would seem to suggest otherwise.
Correlation =/= Causation etc.
Sales probably dropped because everyone who currently wants one got one over Christmas/winter sale.