What did he spent $2.8M on? His PAC was handling most of the ballot access too, so it definitely wasn't that, and he hasn't run any ads. He nearly outspent his income again in February (I believe he did this in January too, and raised more in Jan than Feb); this is not a serious campaign.
Biden’s admin is still refusing to give him secret service protection, forcing him to hire expensive private security
Gary Johnson raised $12 million the whole 2016 cycle. Kennedy just raised a third that figure in one month . He should be compared to other third party/independents, not Dems or Repubs