Preferably, only if it is FOSS and I can disable the telemetry before starting the program for the first time. Especially for local software. If the software requires the internet anyways, it is only acceptable if it is only for internet related functions and only if it connects to the servers that I will specify (e.g. if it is a NNTP client, to be able to specify my own NNTP servers including LAN or localhost if I want to, even when it is not actually connected to the internet).

For knowing how to improve the software, I would like to write public comments to criticize it so that they can improve it from that (and so that others can publicly criticize my public criticism too if desired).