BIB.
It's interesting, because I fear you're right and that the young especially need to be informed and educated about how our constitutional monarchy works and all its advantages - despite its weirdness.
'CEO Graham Smith [of Republic] has criticised hereditary power as being "absurd", and monarchy as an outdated political institution that "abuses its position, abuses public money and which gives politicians too much power." Republic has stated that after the death of Queen Elizabeth II, it intends to mount a campaign for a referendum on the future of the monarchy. The group plans to do this during the period between the Queen's funeral and the coronation of Prince Charles' (Wikipedia).
On the other hand, the organisation's paying members numbered only 5,000 in 2016. Couldn't find up to date numbers and would be interested to see if the Viles have increased its support. I know recent YouGov polls show high approval for the senior royals so really I'm not scared. But underneath, the reason I hate Cringe and Minge is because they're threatening a living archetype that means a lot to us, not only as a nation but also to many of us personally.