I agree completely.
I know several women who've experienced DV. Thankfully none have died although there's been injuries.
One is back with her violent husband because of the social housing shortage. She was put in substandard temporary accommodation which was not safer than being with her husband. It was as bad. Homeless people are dumped in awful places and often one size fits all (so ex prisoners, including possibly abusers, housed in the same blocks as DV victims).
I appreciate the idea of these plaques is well meaning but I know from friends who've experienced DV that many women wouldn't want their name publicly known like that.
The money for these plaques would be better spent on better support for victims - social housing, supportive benefits system etc, as that's what will reduce DV and domestic homicides. (Obviously though if the family of a murdered victim chooses to use their own money for a memorial - plaque or otherwise, that's absolutely their choice).