The phrase "a mere point of" is correct and usable in written English.
It can be used to emphasize that something is insignificant or trivial in comparison to a larger context or issue.
Example: "In the grand scheme of things, this disagreement is just a mere point of contention."
Alternatives: "a trivial matter of" or "a minor aspect of".
Friedmann also calculated the time back to the moment when an expanding universe would have been a mere point, obtaining tens of billions of years; but it is not clear how much physical significance he attributed to this speculation.
He broke twice, saved match point to level and dragged the wretched Nishikori into a tie‑break, where he thrashed him for the loss of a mere point.
The words are mere point of departure for a majestic vocal narrative progression he's invented.
Except for a few notable exceptions, nearly all stars appear as mere points of light because their distance simply precludes our current capabilities from seeing otherwise.
In Mr. Siskind's, Mr. Kurtág's and Mr. Amy's work's, similarly, the glances backward were mere points of philosophical departure.
But these are mere points of departure, from which he takes off, and to which he returns, having in the meantime illuminated, with earthy erudition, one facet or another of London that he has identified as a constant.
The dynamic sequence--which spans about 8 months--has thrilled astrophysicists accustomed to static snapshots or mere points of light.
Whilst we Rave so fair an opportunity offered to participate so largely in all this wealth and enjoyment, if not to govern and direct the whole, can it be possible that doubt, or mere points of speculation, will weigh with the House and cause us to lose forever the brightest prospect ever presented to the eyes of a nation?".
November was not a good month for Microsoft's Windows 8.x operating system according to Net Applications, with Windows 8 and Windows 8.1 collectively gaining a mere 0.05% points of market share during the period.
