Most services mention that in their TOS, even those who have nothing to do with financial businesses, such as PayPal, Western Union and so on. Thus, I don't find it a reasonable argument. However, I never faced any significant issue with PayPal or eBay, on the contrary, they backed me up in a few cases of being screwed over, or when I once had my account compromised, while my family and I've been using them for over 10 years.
I don't think there's a reason to compare Bitcoin and services such as PayPal, it doesn't lead anywhere nor is it a rational comparison.
You are right, where I live there are many services offered by people in certain places, it is something like a physical Exchange, but with other things, such as remittances, they have to exchange through Western Union without the need to go to Western Union, they have ZELLE , Paypal, but none of them try to place shipments through BTC and whenever I see this type of notice I question them because they should do it and not just keep the FIAT device, which is also very popular digital money through BTC.