I suggested Jumble and a few good relays to browse. Happy to share more.
Hashtags are a double-edged sword since anything that gets remotely popular immediately becomes a spam vector. That's even a problem on centralized platforms that people just tolerate because "my insta" 🙄.
A service like Brainstorm makes them fairly usable but it does involve signing up for the service & using specific clients and/or relays. It's not exactly helpful for someone just starting out, in a multitude of ways (at least, in its current stage)... unless of course the individual starts by, say, looking from someone else's perspective via viewing a relay-based filtered hashtag or topic feed directly, such as wss://aquaticchickentheory.nostr1.com or wss://chillstr.nostr1.com ,for example.
For what it's worth, though, Amethyst shows a person's followed hashtags on a profile tab.
The initial crux of this post was about finding interesting people rather than consuming content. Hashtags support the latter. If you want to find people, you have to look for them where they reside, which is on relays.
