Super credit glitch/cheat?

So i was playing helldivers solo a little bit to have some fun an at some point this random guy joined my lobby. And he started throwing down all kinds of strategems that were purely super credits. At first i got greedy and ofc picked it up but when i realised it could be a cheater i decided to stop collecting the super credits.

Since i am pretty certain u cannot place down all those stuff i assumed he was cheating so i went to report him only to find out i cant. I couldn’t even try other possible reports.

So yeah. I really think he was a cheater and although i am thankful that he wanted to give me super credits i now fear this will get my account banned cause i benifited from his cheats.

But just to be sure i decided to ask here. As i am pretty sure its a cheater but i also ask myself if it was just a bug? Cause he kept spawning new super credits strategems without a cooldown.