I answer in English as you may understand this easier than any automated translation:
First of all: here is only a user forum - no representative of Fairphone is involved in this discussion. Also the “Angels” are just users who have agreed to help others in their region, nothing else. So it is not very likely that any requests or complaints in this forum will ever reach any employee at Fairphone.
You wrote “you got a lot of complaints about the removal of the headphone jack” - well I don’t know how many complaints Fairphone as a company got. I just notice, that users complain and say they won’t buy the phone because of that.
However - many people still buy the Fairphone 4. Also see the numbers here: Fairphones sold 2013-2022
In 2021 and 2022 more than 150.000 copies of the FP4 were sold and the second year was better for the FP4 than the second year of the FP3 - eventhough the FP3 has a headphone jack and the FP4 doesn’t. So I don’t think that the Fairphone 5 will have an headphone jack again.
My conclusion is, that other factors are more important for most people than the missing headphone jack. Wireless headphones also are not just purchased because phones don’t provide headphone jacks but because people prefer to have no wires. Especially since AAC and AptX provide a quite good sound quality and many people listen to MP3 anyway and not only high quality losless compressed music.
I also don’t think that Fairphone removed the audio jack just to have a reason for people to buy wireless headsets. It’s more the other way around: because more and more people are buying such things, Fairphone started creating such a product as well. It’s not perfect yet but still better than the products of most other manufacturers who don’t care about recycling or using fair sources.
And let’s face it: using an USB-C-audio-adapter may be a bit cumbersome but is not really that big problem as people describe it. Yes, it is also cumbersome if you want to charge and listen to music at the same time as you then need a different adapter which allows both. But again: this is neither very expensive nor an unsolvable issue - a cable which allows charging and connecting a wired headphone at the same time is about 10 USD.
And a final thought about “wired connections gives you better quality”: if you really want high quality audio, an external high end USB DAC like the Audioquest Dragonfly along with an audio player like the USB-Audioplayer PRO is better than internal headphone jacks in many cases. Of course the source material should then not be low bitrate MP3 but high quality as well.