Is an increase in flood rates a factor in Global Warming?

NO, which surprised me, I thought with more warmth there would be more precipitation and perhaps more floods. however looking back through history there appears no correlation between warm periods and flooding and the worst Northern Hemisphere flooding occurred during the 'Little Ice Age'

More a result of 24/7 fake "news" cycle.

They now have the ability to scare u with every occurrence all over the world. 200 years ago a volcano cud erupt and you may hear about it 6 months later.

It is one of the things that alarmist warn about. They say dry areas will get drier and wet areas wetter. IMO it is convenient predictions of doom at any opportunity.

they are insignificant

No , Its just nature

As temperatures increase, extremes of weather become more likely.

You have it backwards. When temperatures increase more floods occur.