The users that say they get that many links daily with tools like SB are using pre-defined lists, you can also do this with NHSEO if you have lists of pages that are based on platforms that are supported by NHSEO. Even though numbers like that are possible it is certainly not advised for SEO purposes, generally lower numbers of higher quality links from random targets are better for rankings.
The way people use SB is they spend time searching for keywords, then search for targets using those keywords, then remove duplicate targets, then post to these targets, check for links on that list. Once this process has been finished they will have a list of bogs that are auto-approve that they can post to repeatedly.
The problem with repeatedly posting to the same list is it creates an obvious footprint and the number of links created is also quite a big no-no for SEO these days.