Not trying to be all sales-y here, but at Hyperswitch we truly believe in democratising payments and have built an open-source payments orchestrator.
https://github.com/juspay/hyperswitch
Surprisingly this seems to be a common feedback from all. We wanted to go with an aesthetic that would appeal universally, but I guess we went over-the-top with it.
> [3] Checkout experience: how much do you care about the UX of your checkout given you have to render the paypal button separately
There might not be a drastic improvement in the checkout UX even if Stripe offered Paypal as a payment method, but whether providing paypal would improve conversion rates is a question to be answered.