Technology
This is the official technology community of Lemmy.ml for all news related to creation and use of technology, and to facilitate civil, meaningful discussion around it.
Ask in DM before posting product reviews or ads. All such posts otherwise are subject to removal.
Rules:
1: All Lemmy rules apply
2: Do not post low effort posts
3: NEVER post naziped*gore stuff
4: Always post article URLs or their archived version URLs as sources, NOT screenshots. Help the blind users.
5: personal rants of Big Tech CEOs like Elon Musk are unwelcome (does not include posts about their companies affecting wide range of people)
6: no advertisement posts unless verified as legitimate and non-exploitative/non-consumerist
7: crypto related posts, unless essential, are disallowed
view the rest of the comments
I'm willing to bet it's the other way around: most Vivaldi users (or at least the ones that matter in terms of extending Mastodon userbase) don't have a Mastodon account but have a Vivaldi account already (since they are already Vivaldi users).
I think the way they have done it is the most comfortable for new users. Specially considering that most likely it'll be Vivaldi users coming to Mastodon, rather than the other way around (since there are better alternatives to Vivaldi for those who value FOSS, which is common in early Mastodon users).
And as mentioned in other comment, you can actually use third party Mastodon accounts, even if the option is not obvious.