Actually not. There are a lot of people that prefers to use r/bitcoin and r/cryptocurrency rather than Bitcointalk; and I'm pretty sure a huge demographic of bitcoin holders don't even use either, hence there are so much uneducated people that easily fall for these scams.
to be fair people must never trust anything without first doing extensive research about it. this would be specially important when there is something as valuable as bitcoin involved.
and when they start searching the first results are always from bitciontalk.org if someone had made any topics about that service (like scam accusation against cloudmining scams).