"simply strengthens" is a correct and usable phrase in written English.
It is most often used to mean that something is reinforcing or enhancing something else without introducing any new elements. For example, "Regular exercise simply strengthens the body's natural defenses to disease."
My experience doesn't alter my view of inclusion; it simply strengthens my conviction that society's view of disability must change.
Working out keeps your oxygen supply going, detoxifies your body, and simply strengthens your body inside and out.
Working out keeps your oxygen supply going, detoxifies your body, and simply strengthens your body inside and out Daily exercise is best, but if you can't commit to a daily routine, try to include exercise in your regimen at least three times per week.
Their position simply strengthened with each passing session.
If the printers complained, Tschichold simply strengthened his German accent and pretended not to understand them.
"Would it simply strengthen areas that are already have high levels of social capital and entrepreneurship?
Were they making a move to simply strengthen negotiating position, to gain a little more territory?" General Ham said.
But the campaign, in the end, had done little to help the Chinese cause; it had simply strengthened Tibetean nationalism.
Getting voters to pick parties rather than individuals, for example, might simply strengthen the bosses, unless the parties themselves become more democratic.
Republican leaders and many of the party's rank and file countered that ending such fund-raising by the parties would simply strengthen single-issue interest groups.
All that schmoozing in Mississippi and Trump Tower has simply strengthened the impression that Ukip is a one-man show whose Elvis has now left the building.
