really important accounts issues

so in my last report i said that in the new update you can kick your self to go to the server list and play cracked even if it was demo but now i found a really really dangerous way to play minecraft survival offline even if it was demo with no time limit here is the thing:

1-you download minecraft forge (something needed to use mods)
2-you install it and then play it
3-and then there will be no time limit

as i said before many illegal players may use this

i had to put the affects version/s as forge but i couldnt so i putted future version