Evidently has 2 meanings: "obviously" and "seemingly" here it was meant the second rather than the first you're referring to

2 meanings, yep:

1 in an evident manner : clearly, obviously

2 on the basis of available evidence

(It can be used ironically for whatever that word means, but, ironically every word can be)

(From Merriam-Webster)

Merriam-Webster doesn't say anything about irony? Or you meant that the globsec report used the word ironically? It doesn't seems like it to me.

I learned in my high school English lessons that evidently is kind of a false friend and that I should use 'obviously' rather than something that mean 'according to evidence'. It was Oxford's English though, so the meaning in real life might have changed now.

My point is that there is a plethora of alternatives which would be more concise in conveying whatever the authors had in mind. "Evidently" is a weasel word in this case, and it's just leaving us readers to speculate and argue.

alternatively, we can also read the report and stop the speculations and arguments

"Evidently" is used in the executive summary. If we need to read the report to disambiguate the executive summary, then that's just a shitty executive summary.