Only people that get truly mad over unions like this are old people who are single and can't find anyone and want to blame society for why no-one is checking for them
Older people with younger people are unions that have happened since the beginning of time in every society among every race at every time period. All the fake outrage is social media attention seeking. Who cares. As long as the 2 are of legal age and consenting let them rock. People trying to psycho-analyze why those type of unions take place likely need help themselves. Lonely miserable asses.