I think this is unnecessarily inflammatory focusing on the Steamdeck. Did Valve increase price out of nowhere? I am guessing not. Did they on purpose delay their Steam machine launch date? Again, I guess not.
We all know the elephant in the room for this, which will also cause pretty much all PC hardware prices to go up. By the time that happens the Steam deck will probably be again a good deal, since just everything goes up in price right now.
Edit: since the article compares this to current price of the Asus ROG Ally, mark my words, in the next 6 months they will also have to increase their price.
Edit2 later: everyone has seen the news that the Steamdeck sold out again even for that price? If it weren't a useful device for that price, it wouldn't sell that well.