Not true at all. Verse 14 says clearly that this is talking about words, which then leads into verse 15. Verse 16 talks about shunning profane babblings (i.e. words). So verse 15 is also dealing with words (i.e. the Word). Study (the Word). For what purpose? So as to rightly divide the WORD of truth as verse 15 says!
2 Tim 2:14 "Of these things put them in remembrance, charging them before the Lord that they strive not about words to no profit, but to the subverting of the hearers.
2 Tim 2:15 Study to shew thyself approved unto God, a workman that needeth not to be ashamed, rightly dividing the word of truth.
2 Tim 2:16 But shun profane and vain babblings:..."
(2 Timothy 2:14-16).
This obviously applies to another part of Scripture that says,
Heb 5:13 "For every one that useth milk is unskilful in the word of righteousness: for he is a babe.
Heb 5:14 But strong meat belongeth to them that are of full age, even those who by reason of use have their senses exercised to discern both good and evil."
(Hebrews 5:13-14).
Is there a problem if someone does not know how to discern between good and evil?
Yes. There is, for Scripture says...
1 Tim 6:3 "If any man teach otherwise, and consent not to wholesome words, even the words of our Lord Jesus Christ, and to the doctrine which is according to godliness;
1 Tim 6:4 He is proud, knowing nothing,..."
(1 Timothy 6:3-4).
James 4:6 says God resists the proud and gives grace to the humble.
For without faith, it is impossible to please Him (Hebrews 11:6);
And faith comes by hearing and hearing the Word of God (Romans 10:17).
"For this cause also thank we God without ceasing, because, when ye received the word of God which ye heard of us, ye received
it not
as the word of men, but as it is in truth, the word of God, which effectually worketh also in you that believe." (1 Thessalonians 2:13).
Even our Lord was fed the Word of God by the Spirit as He grew in knowledge and wisdom by the Spirit as a child.
"
Butter and honey [i.e. the Word of God] shall
he [Jesus] eat, that
he [Jesus] may know to refuse the evil, and choose the good." (Isaiah 7:15).
So study (the Word) to show yourself approved unto God, rightly dividing the Word of truth!
For Jesus says, "The disciple is not above his master: but every one that is perfect shall be as his master." (Luke 6:40).
...