I also have full access to basically all journals and recently surveyed well over 500 papers in my field of research. Sci-hub was an indispensable tool for this

I also have full access to basically all journals and recently surveyed well over 500 papers in my field of research. Sci-hub was an indispensable tool for this, because it provides a consistent user interface to download _all_ papers. I was able to automate 90% of the PDF downloads because of it, some were blocked because of captcha's, but I was able to solve those manually. This type of semi-automation would be very impractical and cost an order of magnitude more time if I had to dig through the probably non-existent API documentation individual publishers have, or try and scrape their I'm sure by now heavily obfuscated websites.