What a bad idea. So we'll never get a charging solution better than USB-C now. Politicians shouldn't get involved in technology, especially when they don't understand it.
This is an important concern, and it was brought up in the resolution:
“5. Points out that the Commission, without hampering innovation, should ensure that the legislative framework for a common charger will be scrutinised regularly in order to take into account technical progress; reiterates the importance of research and innovation in this domain to improve existing technologies and come up with new ones”

JOINT MOTION FOR A RESOLUTION on a common charger for mobile radio equipment | RC-B9-0070/2020 | European Parliament
JOINT MOTION FOR A RESOLUTION pursuant to Rule 132(2) and (4) of the Rules of Procedure replacing the following motions: B9-0070/2020 (PPE) B9-0072/2020 (S&D) B9-0074/2020 (Verts/ALE) B9-0075/2020 (Renew) B9-0076/2020 (GUE/NGL) B9-0085/2020 (ECR) on a common charger for mobile radio equipment...