Why do my captions always look like 90s karaoke subtitles?

Sometimes I feel like my captions have a personality crisis. One video they look like karaoke subtitles from the 90s, the next they’re so tiny you need a magnifying glass to read them. I keep telling myself “nobody cares,” but then I watch someone else’s video with clean, consistent captions and suddenly mine look like a mess.
I heard about this app called Verba that lets you actually style captions to fit your brand. I haven't tested it yet, but it made me wonder do people even notice when captions look good, or is it one of those things that only creators obsess over?
Part of me wants to get everything looking smooth and professional, but the other part is like, “it’s just a 15-second clip, chill.