So basically uniformitarianism must comply with only the effects we can observe today. Even though there will not be another global flood nor [most probably] a mini ice age nor what would most likely follow the above - much higher frequencies of all manner of natural disasters.
Keep those goal posts moving as much as you need to keep yourselves comfortably ensconced in your modern day ‘scientific’ theories. Don’t forget to ignore all evidence that is contrary.
Floods (not global, that is a whole other discussion) and ice ages are all caused by processes we can observe today. You are thinking too narrowly, it isn't the specific event, but the principles that cause the event that is the backbone of uniformitarianism. Uniformitarianism completely allows for and expects catastrophic events.
Keep those goal posts moving as much as you need to keep yourselves comfortably ensconced in your modern day ‘scientific’ theories.
There is no moving goal posts in science. There are no goal posts at all. It isn't a football game, the point is to study, observe, and extrapolate. Just like the study of gravity has gone well beyond what Newton proposed, even beyond Einstein, doesn't mean the goalposts are moving. It simply means knowledge is being acquired.