Google Search Console will report issues with the URLs as they return a 410 status. This is expected behavior.
Do these URLs actually appear in search results? I tested a few of the URLs listed in the screenshots using site:URL
and none were listed in search results.
Once the URLs are no longer listed in search results, you can safely remove the Search Index Purge plugin and keep Yoast SEO’s redirect setting on “Yes”. This will remove the attachment sitemap thus telling Google to stop crawling the attachment URLs. The ‘Submitted URL has cr..” message may remain in Google Search Console for a while but as long as crawled date is before you removed the Search Index Purge plugin, you can safely ignore the message.