Nope dead on. You cannot refute the excess death numbers or the likely drop in American life expectancy. People's agenda driven desire to minimize this virus is tiresome. This is the only social media I am on. I read my news and I get it from multiple sources. I do not search out alt right sources which I believe others on here do to get their information. However I read all legitimate information.
The excess death numbers will not be out until April at the earliest. Obviously, there will be some, but the actual number will be meaningless unless you look at the details (deaths in each category). Deaths in the USA go up 18-70,000 each year, so they should account for that. You stated a drop in life expectancy of 3-4 years which is .......well out there. It won't be anything near that. Again, the trend is a drop in life expectancy going back a couple of years. Since the average death from Covid is 78-79 years old, if there is a change it won't be large, let alone a 5% change.
Your not alone in this, but with no background in epidemiology nor statistical analysis of social science data you are just failing around with what the media says (which also doesn't have the background to understand). Last time I looked the excess deaths was about 15% above the 2015-2019 average. But that was provisional numbers and will go higher. But, just so you know how long it will take for the final numbers to get out, CDC hasn't published the final numbers from 2019 yet. Usually provisional numbers come out in the spring. Final 2019 number will be around 2,860,000. Estimates for 2020 are between 3 million and 3.2 million. Expected deaths for this year would be in the 2.9MM range. So, excess deaths are unlikely to be anywhere near your 500,000 number.
Hence my comments. Mimicking the media's hyperbole doesn't make it so. Just so you know while the excess deaths in the USA and Europe are significant, world wide it won't be anywhere near what we saw in 1957 nor 1968 flu pandemics.