This.
(B2B Saas founder here)
People often ask me why PartsBox doesn't offer inexpensive B2C plans to hobbyists and I have to explain that it would not make business sense: the costs of dealing with the idiotic EU VAT MOSS rules would exceed the revenue from subscriptions. Plus it would take a significant amount of time, effort and maintenance to support, thus presenting opportunity costs.
If you run a B2B business, things are reasonably straightforward (although still far from obvious), but B2C is a nightmare in the EU (as a side note, I have no idea how people expect to run sustainable small B2C businesses, this is really difficult).
Also, Paddle might be the only reasonable solution, because they do the invoicing themselves. If you can accept that your customers will be getting invoices from someone else, this simplifies things a lot. There is no company that does invoicing for your SaaS correctly if you are based in some EU countries, even though many claim to do so.