Ma Huateng is not the person of a be an armchair strategist.

马化腾并不是一个纸上谈兵的人。

Do not have this one, you won't be ace forever, can be an armchair strategist.

没有这一条，你永远都不会是高手，只能纸上谈兵。

I think this needs to fumble ceaselessly in practice cannot be an armchair strategist.

我认为，这需要在实践中不断摸索，不能纸上谈兵。

I think, this needs to fumble ceaselessly in practice, cannot be an armchair strategist.

我认为，这需要在实践中不断摸索，不能纸上谈兵。

Above 4 respects, have bit of rationalism it seems that, the flavour of be an armchair strategist is stronger.

以上四个方面，看起来有点纯理论，纸上谈兵的味道比较强。