Deinterlace method

It is possible, but I am not sure what more you would want. In the Convert to Edit Friendly dialog, the Deinterlace option applies the FFmpeg bwdif filter with frame doubling - which is the highest qualify deinterlace filter that is available in the open source community.

Also, OP is asking about the Deinterlacer option in the advanced export panel - which has 4 options. So your comment/question might be off topic.