Cannabis can cause hallucinations! It can do so in at least two ways. One is a somewhat rare primary effect of the consumption, and the other is the triggering of a latent mental disorder.

Source: https://www.erowid.org/plants/cannabis/cannabis_effects.shtm.... Do note that Erowid calls hallucinations "visuals".

I know it can also cause psychosis, but it's still rare.

Closed eye visuals/hallucinations is pretty vague because certain levels of closed eye visuals/hallucinations can be seen by completely sober people without even trying and most people would not consider them a hallucination in the common usage of the word. Ive certainly never heard of from others or experienced any unusual closed eye visuals from cannabis outside of seeing it as a tv trope or government anti-drug ad. I could see it being more noticeable or slightly more active than normal while on cannabis certainly but it still seems inaccurate or perhaps deceptive to tell somebody that if they smoke weed they might have hallucinations, at least not without a much more thorough explanation on what kind of hallucination they are talking about.

I agree, and I feel the same about the reverse too. Flat-out stating that cannabis doesn't cause hallucinations, or encouraging people to just try it because it they might find it fun (not OP, somewhere else in the thread) is deceptive, to say the least.

TV and anti-drug campaigns really do a bad job in explaining what really happens to someone on drugs. This is why I specifically linked Erowid.

Weed can be classified as a depressant, stimulant, or hallucinogen (but never an opiate), according to the University of Maryland.

There's power-creep to consider. Modern weed isn't the weed of the 70s after all the cross-breeding. I've read about high schoolers acquiring cannibus-induced psychosis.

https://www.healthline.com/health/is-weed-a-depressant

From personal experience, it is hallucinogenic. I mean it's not like you're seeing things which don't exist, but both visual and auditory perceptions can get deformed, a bit like what LSD does. Combined that with making me significantly dumber and having literally 5-second memory span, I get very anxious / paranoid since I misinterpret things. (I consume weed very rarely as a result)