There are many irritating features of browsing the web with push notifications being the current one which is bugging the crap out of me. So many sites are asking to allow push notifications and I can rarely, if ever, see any reason why anyone would allow them.
I migrated to the Vivaldi browser a while ago which is based on Chromium. This means it has access to the Chrome extensions store and also a lot of settings in common with Chrome. One of these is the ability to block notifications without being prompted.
I’ve searched for the setting in the Vivaldi GUI without success, so need to fall back on the settings page address of chrome://settings/content. Select the Notifications section (ringed in red):