The cynical part of me says they are just complaining that they are not being offered juicy enough bribes compared to their American counterparts.
https://www.baldurbjarnason.com/2024/facing-reality-in-the-e...
The conclusion they come to is: the EU will protect the single market even if it makes things harder for their own businesses, the single market is a totally existential issue for the EU, it is the reason it exists.