I don't know about this...
There was a piece quoted in the Medium blog a few weeks back about how 'The words 'I think' at the start of a sentence never add anything'.
I'm not so sure.
I know that I - like many of my white, male, middle-aged, university-educated peers - may have a tendency, in fact have been almost indoctrinated, to spout off personal opinions and half-remembered facts as if they were the gospel truth, which can be intimidating and counterproductive to debate in groups where others feel less self-assured. And we've seen, for example with Farage and Johnson, the shitpit that tendency can lead to.
I will try to temper that by qualifying statements with those 'I think' intros just as a way of not seeming like I'm trying to impose my version, but probably end up overdoing it on occasion where a simple statement of clear fact should just be confidently presented as such.
Maybe. I think.