The only impediment is they accept cryptocurrency and I am too lazy to get well versed with it. Not forgetting to mention the prices are currently through the roof, and TBH unaffordable for me.
But just like I regularly support Wikipedia and USENIX with modest but periodic donations, I would like to support Sci-Hub as well.
Cryptocurrencies are divisible into tiny fractional units, so you don't have to buy a whole unit of a cryptocurrency to use it. While it is a small hassle to convert your currency to cryptocurrency before sending it, if you use an exchange like Coinbase, it's not much harder than transferring money to a different bank/investment account.
Yes, along with all the KYC requirements that coinbase require, just like my investment account does. Meanwhile the bar for services like Pateron, paypal, shopify, etc is one click and done.