Advice

My dad is mad because I wanna buy my daughters high chair. Although I appreciate it, he has also bought her a jumper and walker but I’ve been looking at a few high chairs and some are only available online. My dad is old so he doesn’t use the internet lol but he’s mad because I wanna buy the high chair? Is that dumb or should I just let him. The ones I’m looking at, transition to a toddler chair/ table.