They can't integrate. They are separate projects on separate blockchains with different purposes.

Also there is no need to panic. Steemit is not about to fail. People thought the same things when Bitcoin was worth a few cents. It didn't just go up in a straight line. Every time it fell people kept saying that was the end.

It happens with all crypto. There is no reason for alarm.

The other important point is that you should NEVER invest more than you can afford to lose in any crypto and always keep a diverse portfolio. That helps in keeping a cool head.