Tweet from @evoskuil:

"A secure PRNG is not secure without a truly random seed. Software cannot produce randomness, and hardware cannot be trusted to do so - unless maybe you build it yourself.

The true con is getting people to trust platform seeding. There is a reason people use dice rolls."

Documentation and code clearly stated devs should provide an external source of entropy. The wallet developers presumably did not read the documentation and implemented anyway. 

I fail to see the issue.