I dont think Bangladesh is that weak in terms of cricketing knowledge or recent performance. They were 3rd in the ODI ranking when pre matches were going on before the world cup. They surely have the capacity to defeat stronger team,in the past it has been looked.

Back in 2015 world cup, they beat England and got into Semi's and in 2019s edition they beat South Africa chasing 333 runs, the highest chase they ever made.

The bilateral series they played all round the year, the statistics show that - mostly all of them were competitive. The Bangladesh team improved since 2015, but certainly lost rhythm.

I have talked about it why they lost rhythm, there are some of the issues thats going on. One thing I agree with you,that -

Bangladesh team and to get rid of Shakib and start rebuilding from scratch.

It is a timely adjustment they should make, otherwise things would worsen.
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