We reckon, however, that a system that is secure, robust, and scalable implies si

English as a Second Language English Vocabulary, Grammar and Idioms
1

We reckon, however, that a system that is secure, robust, and scalable implies simplicity.

it means we assume that a system is secure, robust and scalable, it is also simple?

2

They think that if a system is secure, robust, and scalable, then it is (likely to also be) simple.

The sentence is structurally faulty in my opinion.

3

Dozy,
Since the sentence is structurally faulty, please correct and make it structurally good.