Free Minecraft Server 24/7 (Up to 3 servers and an infinite amount of RAM)

Something seems fishy here. What would they earn? Money from the server owners? That wouldn't be much, as ads for Discord Servers aren't costing much... That just isn't adding up. Seems like a scam.
EDIT: Also, you can use VPSCraft for that. Used that, 100% working 24/7 :D