This sentence contains at least two falacies. Firstly, the enrgy of the sun is not infinite, although within the span of human life on this planet it may as well be. More importantly, the idea that utilising that energy could somehow "eliminate all aspects of profit and capitalism" is total tosh. How are you going to utilise that energy without designing and manufacturing some device or devices? Those devices requre materials and labour, the principle "aspects of capitlaism and profit". Humans will still need to produce food, shelter and clothing which similarly require materials and labour. What the illusury 'bitcoin' scam has anything to do with this is beyond my comprehension.