Alsalam alikum brother/syster. The prophet [pbuh] said
Actions are according to intentions, and everyone will get what was intended. Whoever migrates with an intention for Allah and His messenger, the migration will be for the sake of Allah and his Messenger. And whoever migrates for worldly gain or to marry a woman, then his migration will be for the sake ...
It is not shirk when it is understood that lord means owner. Examples of this are present in the Quran and Hadith where the prophets use the term, and obviously they can not commit shirk.
From the Quran in the story of Prophet Joseph عليه السلام:
فيسقي ربه خمرا
he will give drink to his master of wine
— Quran 12:41
اذكرني عند ربك فأنساه الشيطان ذكر ربه
Of course it isn't shirk because the meaning and usage are clear.
In Arabic you call a father or the person in charge:
رب البيت Rab al-Bayt
(literally house lord or lord of the house).
And the qur'an and sunnah include lots of similar examples.
This all depends if you believe in more than one god that’s why some ask is watching shirk movies shirk or playing video games that involve bringing the undead back to life this is not shirk there was a pubg update I heard once where you would prostrate to idols and bow down to them this is not kufr unless you believe that the idol in the game is you know ...
It is shirk to say this sentence while meaning that it is true. The author of this sentence commits/commited shirk. It may be allowable to say this as a citation if it is really necessary.
I wonder why you should hold a speech without having any influence on what you say. Why don't you just alter the text and say that nature is the gift of God?