We can take the age profile of Venezuela[1] and the estimated hospital rates and general virus profile from the Imperial College report[2].

Assume 80% infection, and assuming that 100% of people who would have needed hospitalization die.

This is 720,000 people, or 2.5% of the population. However, if we just take the working-age population (65 and lower), and assume 50% survival rate instead of 0%, the deaths are just 0.79% of the total population.

So decimation is absolutely inaccurate and the higher-up poster is correct. Developing countries like Venezuela cannot afford to and should not shutdown their economies or societies.

[1] https://www.populationpyramid.net/venezuela-bolivarian-repub...

[2] https://www.imperial.ac.uk/media/imperial-college/medicine/s...