I agree that the number is infinite for the redeemed ones of mankind, but I believe that it is literal for the elect.
Think your exegesis is wrong
Rev 5:10 And hast made us unto our God kings and priests: and we shall reign on the earth.
Rev 5:11 And I beheld, and I heard the voice of many angels round about the throne and the beasts and the elders: and the number of
them was ten thousand times ten thousand, and thousands of thousands;
Rev 5:12 Saying with a loud voice, Worthy is the Lamb that was slain to receive power, and riches, and wisdom, and strength, and honour, and glory, and blessing.
Rev 5:13 And every creature which is in heaven, and on the earth, and under the earth, and such as are in the sea, and all that are in them, heard I saying, Blessing, and honour, and glory, and power, be unto him that sitteth upon the throne, and unto the Lamb for ever and ever.
N-NFP (BSB Morphology)
Noun - Nominative Feminine Plural
Lemma: δισμυριάς
Word: myriads
Greek: μυριάδες
Transliteration: myriades
G3461 (Mickelson's Enhanced Strong's Dictionaries of the Greek and Hebrew Testaments)
G3461 μυρίας murias (mï-riy'-as) n.
1. a ten-thousand.
2. (by extension) a “myriad” or indefinite number.
N-NFP (BSB Morphology)
Noun - Nominative Feminine Plural
Lemma: χιλιάς
Word: thousands
Greek: χιλιάδες
Transliteration: chiliades
G5505 (Mickelson's Enhanced Strong's Dictionaries of the Greek and Hebrew Testaments)
G5505 χιλιάς chilias (chiy-liy-as') n.
one thousand (“chiliad”).
15 Study to shew thyself approved unto God, a workman that needeth not to be ashamed, rightly dividing the word of truth. 16 But shun profane [and] vain babblings: for they will increase unto more ungodliness.
G1384 (Mickelson's Enhanced Strong's Dictionaries of the Greek and Hebrew Testaments)
G1384 δόκιμος dokimos (d̮o'-kiy-mos) adj.
1. (properly) tested and proven acceptable.
2. (after sure examination, trial by fire) verifiably approved.
G3718 (Mickelson's Enhanced Strong's Dictionaries of the Greek and Hebrew Testaments)
G3718 ὀρθοτομέω orthotomeo (or-tho-to-me'-ō) v.
1. to make a straight cut or slice.
2. (figuratively) to rightly dissect (the divine message); (i.e. discern and explain).
J.