Twitter is the most dangerous place for any crypto investors vs Telegram, on Telegram you are going go get PMed and that's purely wrong and suspicious but on Twitter, you really can't tell the difference some times...
In the past, I participated in social media bounties here and that had me experiencing so many obvious scam projects, false airdrops and promotions. Like you said, it's easier to identify scams on Telegram than on Twitter but both are headquarters of fraud. Yes,scammers are often in a haste on Telegram, so their impatience will make them private chat their targets and that's a red flag. On Twitter, scammers just drop links and then wait for their traps to catch their preys. They don't rush. For me, I don't take anything crypto investment or giveaway on Twitter seriously any more.