A TV version of Raiders of the Lost Ark already did this by adding CGI to the effects shot of the cliff face in the truck chase.

That shot was altered specifically because, as stated in a 1990s LFL book on the Lucasfilm Archives, George Lucas personally approved the original matte shot after a test screening, despite concerns from ILM employees who still wanted to tweak the composites.

Just one more instance of Lucas deliberately being a hypocrite with respect to his past self so as to discredit the idea of Special Editionism in the public mind.