Not unless the director framed the scenes in such a way that cropping to 16:9 wouldn't lose detail crucial to the scene, or sometimes less important stuff like foreheads and text credits getting chopped off.
Look up 1983's "V". Kenneth Johnson kept widescreen in mind, despite filming in the standard TV set aspect ratio of 4:3. The subsequent DVD and blu-ray sets, which did crop, have no bearing on viewing... indeed, it improves on it in some scenes, starting with the camera angle of the skull in the foreground-left as the Visitor ship arrives in distant-background.
...however, the same cannot be said for "The Final Battle", which he had nothing to do with. On the DVD release, scene after scene has poorly proportioned heads being cropped off at the top. A couple scenes have text looking awkwardly-positioned. This is why the blu-ray release was reverted to its original when remastering (which looks magnificent BTW) and intended 4:3 format. 16:9 wasn't considered at all when they filmed TFB. The differences between the two home video releases are monstrous. Literally.
Just trimming off the top and bottom to nix pillarboxing is not enough, and to go into every last camera angle to nudge up or down before cropping - that's ludicrous, and chances are there might be some necessary detail that will still get cropped. If nothing else, seeing whacking-large close-ups of newly scalp-free people ends up looking bad and even claustrophobic. Not everybody notices, not everybody does photography as a hobby either, and having seen other shows - even TV sitcoms from videotape - in streaming where they crop to remove pillarboxing, the result is also comically bad as the material is "zoomed"- showing larger film grain, or in videotape's case a much blurry/fuzzy image. I've seen numerous instances of this, and they did have "AI" applied to attempt to sharpen the video, as it's doubtful they would scrub out and replace the font typefaces used just so it wouldn't look crap when enlarged. Other telltale signs of blurry areas juxtaposed next to oddly-"crisp" areas just scream out of the set and the only word I can think of right now that fits is "tacky", which also describes my sense of humor at times...