Singapore Web3 offer: probation, notice period, and pressure to join fast — normal or red flag?

I got a Singapore Web3 offer, but I’m uneasy about how fast they want me to decide and join.

I’m already employed, so I cannot resign overnight. On top of that, the offer has a probation period, which makes the move feel riskier. That’s what I’m trying to understand: in Singapore Web3 hiring, is this normal? Do good companies usually respect notice periods, or is pressure to join fast common?

I do not want to lose a good offer by overthinking. But I also do not want to quit a stable job and realize I got rushed into the wrong setup.

For people who have seen Singapore crypto/Web3 hiring closely, would you treat this as standard market behaviour or a warning sign?