I don't see anything weird about it. You're watching a series which is a spin off of one of your favourite movies as a kid. I myself didn't actually watch The Lion Guard till mid way through this year when my daughter actually started paying attention to the TV for short periods of time. This is a show I do enjoy watching with her and I'm 28.
Addmitedly, if I didn't have her, I probably wouldn't have bothered with it as I wasn't a big lover of Simba's pride and at first glance, I didn't think much of it. But as a show for kids, I think it's great and I can totally understand why older fans of TLK would enjoy it
TLDR: Don't listen to people who make comments