Replacing Stripe with Whop is incredibly cool.
While Stripe is usable, it lacks innovation. It feels old-fashioned, outdated, and boring. People associate Stripe with a stale fintech company.
Whop, on the other hand, offers a modern feel, an online experience. You feel comfortable using it, rather than being forced to.
Especially for agencies, the feeling of settling transactions through Whop is completely different. It represents taste, it represents being up-to-date.
Whop's success is simply because it's cool.