This is a really dumb question.
You can very easily make isos from your PS2 discs.
As far as I can tell, it does not support discs, because you need to package up the iso as a pkg file, which can then be installed.
Maybe they will figure out a way to add disc support later.
It is extremely asinine to suggest that people copying games they have bought from one format to another format are pirates.
I don't this he was suggesting that. more or less "other means" which I can see as semi acceptable due to PS2 games not really easy to get certain ones, ya know. unless spending a couple hundred on a game is totally worth it for playing a classic title. Also the fact that publishers are not making any profit whatsoever.
Now if Sony were to release let's say a PS2 Vitural Console and have their library of all their PS2 games available both on PC and PS4 they could make some decent profits on it... possibly.
I know I would buy into it for some games.
But without this, it's why I don't bother playing PS2 games even though we have a PS2 Slim here. Lot's of setup also the fact that RCA is like a thing of the past and can't even hook it up to some TVs or like ours... It has the jacks but they don't work XD
I did do a memory card hack to pull the OS files on an old PS2 slim which I sold off for emulation but damn that's too much work in itself.