Your ip address is like a business card. If it is based in El Salvador it is as if it is saying "We love bitcoin".
Let's pump it.
Great idea, lol. But be aware too that maybe some platform or services online that you will use may not allow the user that using VPN, much better to check first their Term Of Services because it could lead to your funds being locked because you violated some of their term of services, just my 2 cents.
Btw, is this not considered cheating? Like, it's not natural that El Salvador is driving adoption, it's some people who are just changing IP address to El Salvador? But overall, I don't find any bad things here, it's just like you are lying.