It may be hard to believe, but there are sick and twisted individuals in this dangerous world who copy from github without even a single glance at the license, and they live among us.
Yes, and those people are violating the licenses of the code when they do that. It's not unreasonable to expect a massive company like microsoft to not do this on a massive scale.
There are always exceptions (maybe they might be norm in this case) but its still not 100%, still not all encompassing. This "AI" seems to be. I think that is like the entire concern. ALL the code is affected for all the instances.