The + thing | fact | point | problem | reason + is (FOCUS)

Point 5 in the category of FOCUS is defined as:

‘The thing, fact, point, problem, or reason + is (that)’ for focus.

Brisbane Times
The thing is that any additional money you have sitting directly in your mortgage is not safe for you to access any time.
Warrnambool Standard
The fact is, high carbon emissions are embedded in New Zealand’s tourism GDP.
Washington Post
The point isn’t that the cognitive test is easy. The point is that Trump keeps bragging about it.
Well, the reason is that this pandemic has had somewhat of an unprecedented impact on many industries.