Blur hardcoded subtitles - any new solution for 2020 year?

[tuskacz]

Disclaimer - no, I am not looking for solutions already mentioned in threads like 'crop video', 'use Virtualdub DeLogo filter or MSU Subtitle Remover filter'
I know them very well and although these are not perfect ways, these are from previous decade.

So I haven't been on top of video processing news and I hope technology has improved in last years in this area.
Can you please tell me what are new, robust ways to intelligently blur hardcoded subtitles from video file?

By 'intelligently' I mean the tool should detect hardcoded subtitle area for every video frame , and then apply blur effect.
It should be intelligent in a way that it should not alter any frames which do not have hardcoded subtitles.

[jagabo]

I've done such things with AviSynth. But it requires some hand tuning of the parameters.