> don't see what they have to do with AI

Not directly. This fab is meant to primarily fabricate compound semiconductors which is Infineon's niche and is a major bottleneck for European industry today.

> Does everything need to have the word AI these days

Because Infineon's press release [0] for their compound semiconductor fab called out "AI".

Additonally, the "semiconductor" and "hardware" segment has now been rebranded has "AI" in a number of funds. By calling out something that's even tenuously tied to "AI", it allows funds that are contractually tied to investing in "AI" to purchase Infineon stock.

Investor relations is important as well.

[0] - https://www.prnewswire.com/news-releases/infineon-opens-the-...