Right - in the sense of making it in order to be idolized and purchasing it in order to idolize it!
However, I find no fault if a person wears one as a remembrance only and profession of faith in Yeshua again not that the symbol is being used or reverenced in an idolatrous way.
Now, there are some who wear a cross as a symbol only (not idol) of the fact that they too have their own cross to bare - in the sense of living for God and dealing with th hatred and antagonism of this world because of their faith. In that case, they most likely do so in a symbolic reference to what Yeshua stated:
And he that taketh not his cross, and followeth after me, is not worthy of me.
(Matthew 10:38)
Then said Jesus unto his disciples, If any man will come after me, let him deny himself, and take up his cross, and follow me.
(Matthew 16:24)
And when he had called the people unto him with his disciples also, he said unto them, Whosoever will come after me, let him deny himself, and take up his cross, and follow me.
(Mark 8:34)
Then Jesus beholding him loved him, and said unto him, One thing thou lackest: go thy way, sell whatsoever thou hast, and give to the poor, and thou shalt have treasure in heaven: and come, take up the cross, and follow me.
(Mark 10:21)
And he said to them all, If any man will come after me, let him deny himself, and take up his cross daily, and follow me.
(Luke 9:23)