Aubameyang is 34 years old and his quality has dropped a lot so I think it's only natural that he isn't wanted by Chelsea and indeed he has to go to a team that needs him more.
Vardy's loyalty must be admitted, since a few seasons ago when many teams wanted him but he remained loyal to Liecester, as well as now when the Liecester team is down but the player will still defend this team, he is a hero for the Liecester team in my opinion.
But loyalty is useless if you're not a big or popular player, everyone only know him in 2016 and next 2 seasons, right now people are forget about him. I wouldn't talk about Messi, Ronaldo, Neymar, Mbappe, Haaland or any players that obviously very popular.
Some players like Harry Kane, Son, Griezmann, Hakimi, Sadio Mane, Maguire etc aren't always play good, but they have their own fans.