You may be on to something: I seem to have experienced the opposite, as having grown up reading Ligne Claire-comics initially made it really difficult for me to follow what was happening in comics drawn in other styles.
Not French but I've felt this too -- purely on an aesthetic level I enjoy the artwork of Tintins, Asterixes, and even older American superhero comics, because of the simpler, more traditionally comic-like artwork.
Modern comics have more realistic colors but appear "over-pencilled"[1,2] somehow.
[1] https://imgur.com/a/GOCCMZv [2] https://imgur.com/a/Rysp9do
Lines in these other series are not as straight as in Tintin. They feel more hand drawn or something. I'm not really able to explain.