Isaiah 7:14 was written long before Messiah was born. Literally, there was a child born in Isaiah's day. He was a prophetic foreshadowing of Yeshua. It is not a matter of whether Matthew agrees with you or me, it's a matter of whether we agree with Matthew.Mathew would not agree with you?
Matt 1
18 Now the birth of Jesus Christ was on this wise: When as his mother Mary was espoused to Joseph, before they came together, she was found with child of the Holy Ghost.
19 Then Joseph her husband, being a just man, and not willing to make her a public example, was minded to put her away privily.
20 But while he thought on these things, behold, the angel of the Lord appeared unto him in a dream, saying, Joseph, thou son of David, fear not to take unto thee Mary thy wife: for that which is conceived in her is of the Holy Ghost.
21 And she shall bring forth a son, and thou shalt call his name Jesus: for he shall save his people from their sins.
22 Now all this was done, that it might be fulfilled which was spoken of the Lord by the prophet, saying,
23 Behold, a virgin shall be with child, and shall bring forth a son, and they shall call his name Emmanuel, which being interpreted is, God with us.
The Lord says: "These people come near to Me with their mouth and honor Me with their lips, but their hearts are far from Me. Their worship of Me is based merely on human rules they have been taught." Isaiah 9:13 NIV