How to know if the override or hardening will work on Firefox ESR?

[codayon]

I'm on Debian and using user.js for Firefox ESR 140. I have an override file which I used when I was using latest releases. Can I use that in here too without getting into trouble?

// PREF: disable login manager
user_pref("signon.rememberSignons", false);

// PREF: disable address and credit card manager
user_pref("extensions.formautofill.addresses.enabled", false);
user_pref("extensions.formautofill.creditCards.enabled", false);

// PREF: hide site shortcut thumbnails on New Tab page
user_pref("browser.newtabpage.activity-stream.feeds.topsites", false);

// PREF: hide weather on New Tab page
user_pref("browser.newtabpage.activity-stream.showWeather", false);

// PREF: hide dropdown suggestions when clicking on the address bar
user_pref("browser.urlbar.suggest.topsites", false);

// PREF: ask where to save every file
user_pref("browser.download.useDownloadDir", false);

// PREF: disable all DRM content
user_pref("media.eme.enabled", false);

// PREF: hide the UI setting; this also disables the DRM prompt (optional)
user_pref("browser.eme.ui.enabled", false);

// PREF: show the menu bar 
user_pref("ui.key.menuAccessKeyFocuses", false);

// PREF: search suggestions
user_pref("browser.urlbar.suggest.history", false);
user_pref("browser.urlbar.suggest.bookmark", false);
user_pref("browser.urlbar.suggest.engines", false);
user_pref("browser.urlbar.suggest.openpage", false);

[yokoffing]

Without doing a deep dive: Yes. All the entries here have existed for quite awhile.