It depends on your definition of “care”. As other comments have noted, you might get a letter. History suggests they would not be likely to attempt to prosecute you for tax evasion.
The letters described are for correctable human mistakes that can be detected by math crosschecking and fixed by a letter. If they decide you are trying to avoid paying taxes on Bitcoin, and they decide to be upset about that, they would likely initiate an audit instead of a form letter — the serious, investigator, difficult kind.