I run models locally on my 5070 i bought a year back for around 550€ (now costs around 900€ - insanity). Yes, it runs completely locally with pretty good results, and i am using an AM4 platform, which is now a few years old, and was also able to run smaller models with my 3070Ti with good speed.
My viewpoint regarding the models themselves is that since everything on the web has been used including everything i have put on the web in the last decades, there is also not much of an ethical problem here when using these things in a non-commercial setting - i am not making any money with it and i am not disseminating the output, and therefor i also do not cut into the profits of any creator (i mainly use it to automate tedious tasks or to get a complicated RegEx/sed/awk situation under control without breaking my brain - no cultural output like text or images). On a larger scale i would prefer it if models and datasets were under UNESCO stewardship - free for non-commercial use, with licenses being sold to corporations and organizations, where the income from the licenses get distributed to the people providing for the datasets (in this case in an opt-out basis - these models already represent a cultural snapshot of humanity, and the assumption is that artists WANT to add to human culture) or for financing young artists.