From videos, people that went there, paper (trades), etc.

YES.

But as usual. If you are competing country like USA & India, you would cherry pick whats wrong in that country to make a case.

Yes correct. But that time where technology and advancement is really needed that they cannot employ cheap labour anymore.

The only way to make less precision products for cheap is to use cheap labour.

The only way to make expensive precision products is to use trained and knowledgeable expensive labour.

Those expensive branded bags and wallets are not precision products. You could train cheap labour to make it. @ factory assembly labour.

You can however make crude electronics with cheap labour. Electronic control boards for single function or toys.

But you cannot make precision board like PC motherboards & smart phone boards with cheap labour. But parts of the assembly can be cheaper with manual labour than a fully robotized assembly line. 1 robot can cost 10-50 people wages in purchase cost, training and maintenance costs. So the final answer to why manual labour is used is no brainer.