They mean slow to actually be used by people. Doesn't matter that it's shoved everywhere if in the end there are 0 users clicking the magic wand icon.
It is shoved everywhere but nobody really needs it.
Being better than Atlassian's search isn't a difficult hurdle to clear, but it's one of the only areas where I've seen a noticeable improvement caused by an "AI" product. Not sure the search actually uses AI or just happens to be a decent cross-product search tool, there's a separate interface to chat with it & have it summarize things so the search might not really be using the AI.
The thrashing wails of people who've spent billions on something that they should have done more due diligence on and don't want to write off their investment.