The next recession and the rate of profit

https://weeklyworker.co.uk/worker/1226/marxs-formulae-confirmed/

“In conclusion, there has been a secular decline in US profitability – down by 28% since 1946 and 20% since 1965; and by 6%-10% since the peak of 2006. So the recovery of the US economy since 2009 at the end of the great recession has not restored profitability to its previous level. Also, the driver of falling profitability has been the secular rise in the organic composition of capital, which has risen around 20% since 1965, while the main ‘counteracting factor’ – the rate of surplus value – has fallen. In 2017, the US rate of profit fell compared to 2016 on some measures (2%) or rose slightly on mine (1%). All measures show that the US rate of profit in 2017 was 6%-10% below the level of 2014.”

Any of our economists care to comment and explain the significance and relevance to a dunderhead on Marxian economics like myself.