As of April 20, the seven-day moving average for new covid cases in Michigan was 790 per million. This is higher than any other US state, and it is several times higher than the case rate for Michigan a year ago. It is comparable to what it was at the beginning of cold and flu seasons last fall, when Whitmer issued orders for a new round of business closures.
In other words, if Whitmer were using the same metrics she was using to justify lockdowns in the past, she absolutely would be imposing very strict lockdowns now. Frankly, the case numbers in Michigan are terrible by the standards of those who use case numbers to push more covid restrictions.