100% agree - I've said this a few times on threads, such as when people say we should slim down to save money, ignoring the fact that we're already doing that in the UK with no discernible benefit to UK citizens on the whole.
Norway - The smallest RF has still had numerous problems. Princess Martha Louise uses her title in money making ventures - I think she currently has her own Netflix documentary. She is married to a man who has made numerous dodgy claims, including selling medallions that he claimed would cure Covid. The Crown Princess' son is currently due to go on trial in 2026 for 32 offences, including 4 counts of rape.
Sweden - Less slimmed down than the UK. All grandchildren of the monarch, including female line descendants, have princely titles and dukedoms, although some of them no longer have their HRH. They all get orders and official televised christenings etc. although it's accepted that they mostly won't have official roles.
Belgium - Less slimmed down than the UK. All grandchildren of the monarch, including female line descendants, currently have princely titles. There is ongoing low level drama around Princess Delphine, who was born from an extra marital affair of King Albert. The Belgian courts decided to recognise her and her children as princes/princesses, because the Royal Decree governing titles never specified that children had to be born in marriage. This meant that 3 people raised completely out of the RF are now walking around as Princes/Princesses of Belgium.
Denmark - One of the most lavish courts out there imo. They have a lot of official televised banquets/celebrations for things that aren't constitutionally significant, like the Queen's 50th birthday and the coming of age celebrations for Princess Isabella (not the heir). They have removed titles from other grandchildren, but that is pointless window dressing given the above.
Luxembourg - all grandchildren of the monarch have princely titles, albeit not 'of Luxembourg. There was also an investigation into bullying by the current Grand Duchess.
Leaving out Monaco as I think they don't receive state funds, and Holland as I don't know much about them.
TLDR: The point is that the European royals generally aren't any better behaved than ours, and they certainly aren't more slimmed down, with the exception of Norway. I'm not sure it has benefitted the Norwegians though, given the above.