This can either mean a) all covid conspiracy theories are 100% accurate or b) some covid conspiracy theories are 100% accurate.
Many covid conspiracy theories are incompatible with one another, so they cannot each be accurate 100%. So you cannot mean a). But b) is a much weaker claim: anything can be called a conspiracy theory, and consequently the claim just ends up being that somebody was right at some point in time. Claim b) has little to no predictive power.