Completely agree. This should be well beyond accusations of corporate bullying. It's one thing to mention Legos, it's another to actively include a brand name in your product! NikeGPT, CocaColaGPT and IkeaGPT will face the same issue ;)
Mentioning Lego is absolutely OK, and you can sell used Lego as well and note that you are using genuine Lego bricks (resale laws simply allow that). Lego is really antsy about anything which might look like it is actually a Lego Group initiative though, and anything where Lego bricks are offered for sale in a modified state¹.
