I disagree with this conclusion. I'm a nice person that is active and invested in STEEM. It is easy to ask me to be careful but this stuff can literally be done by anyone at anytime.
If it breaks the STEEM network when 5MB gets uploaded I might have to revisit my decision to be so largely invested.
So far i don't see any reason to be nervous and I am monitoring the network (as my post details) while doing my tests.
Thanks for your