I mean he's not wrong. We have fuck all to show for being in that competition apart from a couple great wins in the group stages and the last 16, and one quality run to the final.
The type of European history over 20 years maybe a club like Spurs would be happy with.
Clubs like Monaco, Porto, Inter, Atletico, Valencia, Borussia Dortmund, have all done more in the CL over that time, let alone your AC Milan, Juventus, Real Madrid, Barcelona, Man United, Chelsea, Liverpool etc.
We were a Bayer Leverkusen level club in the CL