META is currently way underpriced relative to competitors, while still having strong earnings growth, high profitability and a definite moat. It's current PEG ratio is below 1.0, indicating low price relative to expected forward earnings growth.
They've recently had problems with some in their management and with reports of low morale, but companies often can have such scandals or problems and frequently come back stronger or perform despite these face problems.
As an AdTech company, investing heavily in AI provides a direct ROI via better ad targeting (increasing customer ROI on ads) as well as outperforming competitors in attracting ad buyers (potentially stealing market share). Therefore it makes sense to invest in AI for such a company (GOOGL is another that comes to mind here, but the market is rewarding them for such investments as they see GOOGL as more vertically integrated, but that's another conversation).
Make the Bear case for META, why they are rightly worth such a low price vs. their competitors, and why we shouldn't just be buying a ton of META shares at this price point.