Hello,
Apparently a big misunderstanding (or bug) has occurred after the Visual Editor installation on the French Wiktionary.
The community has never asked to force all IPs to edit with this tool in the main namespace: they should have the choice between "edit" and "edit the code", like on the French Wikipedia.
Please find the consensus below:
https://fr.wiktionary.org/wiki/Wiktionnaire:Wikid%C3%A9mie/juillet_2017#Contrairement_.C3.A0_Wikip.C3.A9dia.2C_ici_les_IP_n.27ont_plus_du_tout_acc.C3.A8s_au_wikicode_dans_l.27espace_principal