A disastrous state of the economy led to accumulating dissent and dissatisfaction with the regime
The economy was worse and people were less well-off in the 30s and 50s than the 80s. As bad as things were 1970s=80s USSR still had more stuff and better food than before.
Communist states are good at suppressing dissent. They have 70 years to make people scared of kgb either arresting them or making sure their kids will never ever get good job or accepted in college if they protest too much.
You are right the economic issues provoked the political issues, just not in the way you are portraying it. It provoked them by inducing Gorbachev to carry out reforms which undermined the control the CPUSSR exercised over the country.
Basically yeah the people are unhappy but nobody thought you could overthrow Communism, the system could weather a bad economy. I know this because it weathered shittier economic conditions than the 1980s ussr did.
Yes, it was a political crisis that destroyed the USSR, but it is like saying that the Battle of Berlin destroyed Nazi Germany. Correct, but it is not the full picture.
Then why is North Korean leader Kim Jun on partying with Dennis Rodman despite having economy which 100x worse than 1985 ussr