The commercial incentive in professional services runs entirely toward the stronger word. A finding sounds better than a hypothesis. A proven approach sounds better than a position. The stronger word is free to write and it is what the reader expects, so it gets written.
The cost arrives later and lands on everything. A reader who finds one overstated claim reweights every other claim on the page, including the true ones, because they now have no way to tell which is which.
The rule we run
Where evidence does not support a stronger term we use hypothesis or working thesis, and we say which. A hypothesis is something we believe and have not tested. A working thesis is something we act on while remaining willing to drop it. A position is something we have argued out and hold. A finding came from a measurement, and the measurement is named.
Applied honestly this makes a fair amount of our material sound provisional, because a fair amount of it is. A reader who wants certainty will find someone else offering it. They will be offered it by a firm that cannot distinguish between the two either, which is a worse purchase than it looks.
Why it is worth the cost
The value of the weaker word shows up on the occasions we use the stronger one. A firm that hedges by default is believed when it stops hedging. A firm that asserts everything has spent that signal and has no way to say this one is different.
It also changes internal behaviour. A team that has to label its own confidence in writing notices, faster than it otherwise would, how much of what it believes has never been checked.