Are you in support of UBI?
I don't think that it's a terribly interesting question as a yes-or-no question for all UBI policies.
The thing about UBI is that the devil is in the details: UBI covers a broad range of policies. You really need to know the specifics of a proposal to know what it entails; UBI policies may be very different.
For example, there are a number of left-wing groups who like the idea of UBI, because they see it as a way to redistribute wealth. Normally, they tend to want something like keeping spending policy more-or-less where it is, adding UBI, and increasing taxes on some groups that they'd like to shift wealth from.
There are also a number of small-government right-wing groups who like the idea of UBI, because they see it as a way to reduce the role of government in setting purchasing decisions. Normally, they tend to want something more like a revenue-neutral form of UBI; there, one does something like cutting spending policy (on various forms of subsidy, say, like for food or housing) by $N and then shifting that $N to UBI so people can choose how to spend it. Here's a right-libertarian take on UBI:
https://www.libertarianism.org/columns/libertarian-case-basic-income
Of course, as with any policy proposal, the details matter a lot. And the Swiss proposal is problematic in a number of ways. For starters, 2,800 USD a month means that a married couple could get $67,200 per year for doing nothing. And while it’s true that Switzerland is one of the richest countries in the world in terms of per capita income, that’s still an awful lot of money. Furthermore, the Swiss proposal seems to involve implementing a basic income in addition to their currently existing welfare system. Few libertarians would be willing to sign up for that deal. But as a replacement for traditional welfare programs, there is a lot for libertarians to like about a basic income.
So, okay, both our wealth-redistribution guys on the left and our small-government guys on the right are talking about UBI policies...but they are talking about policies with very different implications due to the specifics of the policy. The left-wing guy probably isn't especially excited about the form of UBI that the right-wing guy wants, and the right-wing guy probably doesn't like the form of UBI that the left-wing guy wants. So I'd really need to know the specifics of a given UBI policy before I could say whether I think it's a good idea; I wouldn't just be across-the-board in favor of or against any UBI implementation, but would need to see a specific UBI proposal and consider it individually.