I have Firefox 109.0.1.

Firefox Multi-Account Containers 8.1.2 can't open links outside of any container from the personal container if user made 2 confirmations... Links will open inside the personal container instead. It's not clear if there are any hidden settings around this. I don't think that manual requests from the context menu should follow the general rule, they should be given priority. Left clicks and the address bar must obey the rules, but right clicks must take precedence over the rules.

Firefox Multi-Account Containers 8.1.2 will ask for confirmation twice when assigned and then when opening any website.

By default, Firefox Multi-Account Containers 8.1.2 doesn't have even the largest banks...

By default, Firefox Multi-Account Containers 8.1.2 doesn't have even the largest marketplaces and shops. Users have to add shops manually... Definitely not suitable for smaller shops.

It's not clear how to create more than 4 containers or rename the standard ones with Firefox Multi-Account Containers 8.1.2...

It's not clear how to clear some or all containers with Firefox Multi-Account Containers 8.1.2... Users don't have visible options.