Not sure if it's stupidity on Russia's part or deliberately using civilians as cover in temporality occupied Crimea but it's not the first time Russia has placed military hardware near public beaches:

https://www.newsweek.com/russia-crimea-air-defense-yevpatori...

https://x.com/auto_glam/status/1804869425092313124

And as you highlighted this is Russia's own doing, as the damage was from its own air defense missiles