If you cannot tell the difference in the tone used when making feedback vs complaint, then yeah maybe you should remove yourself from the thread.
For anyone who has root, these build.prop entries to force enable VoLTE worked for me:
persist.dbg.ims_volte_enable=1
persist.dbg.volte_avail_ovr=1
persist.dbg.vt_avail_ovr=1
persist.dbg.wfc_avail_ovr=1
persist.radio.rat_on=combine persist.radio.data_ltd_sys_ind=1 persist.radio.data_con_rprt=1
persist.radio.calls.on.ims=1
Or if you're using Magisk, use the VoEnabler module if you don't want to manually edit build.prop. I'm not sure if you can edit build.prop without root.
Feeback is just a nicer word to use only. It does not means you cannot complaint in the feedback. Since when people see form (either paper or electronically) say welcome your complaint?
I used mtk engineering to force it.