If you are skeptical and think "COVID involved" according to CDC might mean they could have died of other things but also happened to have COVID, then here is an exercise you should do: First, go to CDC and download all the death data for 2015-2020. Second, import this into your spreadsheet of choice and plot all of these deaths as 6 individual time-series plots with Jan-Dec as the X axis. Third, observe that the curves are nearly identical for 2015-2019, with the exception of a very slightly elevated curve for one of the flu seasons (I think it was the tail end of 2017 / start of 2018). Now observe that the curve for 2020 has several giant bumps in it that precisely correlate with the COVID surges in both size and shape. Calculate the area between that curve and any of the previous years. Now observe that it very, very closely matches the number the CDC is reporting as "covid involved" deaths for 2020.

I did this. This is quite convincing to me that the "COVID involved" deaths are not mis-categorized and they actually are related to COVID unless CDC is straight up fabricating death numbers on a massive scale. The stories about the COVID death categorizations being overstated are pure FUD.