I really don't care that I used every piece of illustration from this pack months ago in an ebook when it was first posted because I have no shame and needed to push out a shitty ebook.
Use this if:
You are ok with your project looking like MailChimp and any other tech brand ripoff.
You are ok being ripping off a style that is not ownable anymore.
You are ok with not being original.
You are ok with being lazy on your art direction.
You have no illustrator or illustration budget.
You are ok with supporting low-tier free stock and taking money out of the pockets of hard working illustrators.
You are aware that there is an industry full of trend humping snakes doing the same shit as you.
The responses in that Twitter thread are something else.