Most science can't be done on a basic income, you need funds to buy equipment, to operate equipment, and maintain equipment. Most science also can't be done alone. You have to be able to sell others on your ideas, in any economical system that is not post-scarcity.

These scientists aren't schmoozing for a paycheck. Research is expensive. They're getting funding for equipment and personnel.

Speaking as a Socialist, no, lmao.

First off, UBI's are not Socialism. In fact, they are antithetical to Socialism. They are Social Democracy, which is objectively the moderate wing of Fascism, the standard borne by those who think we can make a better society by instituting ranked-choice voting, net neutrality, and a 32-hour workweek without ever looking past the symptoms into the actual problems inherent in the system.

Under Socialism, the vast, vast majority of science will be done (as it is/was, in the USSR and China) by government or government-funded research organizations, where materials are supplied to them and their research is guided by the public interest.

Cranks doing "science" in their garages and basements in their spare time will still just be cranks.