If it is true that Ubuntu 19.10 comes with Python 2.7.16 (I did not found any info on it, but I have no reason to doubt what I have been told), I presume that the future LTS will have it as well. If it is so, it is just a matter of months.

In any case, the solution that worked for me is just fine, may I suggest to simply describe the procedure on the wiki? As a user, I think I would prefer to spend a pair of minutes tweaking the preferences rather than downloading a large file containing another version of Python. Ubuntu already comes with Python 3.6, it just not the default version, so any Ubuntu user already have at least one modern version of Python (as you could see, I actually have more then one that were installed with different software). This just in the case the new Python detection feature do not work flawlessly. If the new release is already available for download, I can test it.