That’s historically inaccurate, because the New Testament was written in Greek, our Lord spoke Aramaic, and the ancient prophecies you refer to were written in Aramaic in the case of Daniel and primarily Hebrew in the case of Ezekiel and Isaiah,, and refer if read literally to the Morning Star. They clearly do apply to the devil, but the word Lucifer specifically is a Latin name meaning “bringer of light”, and several early Christian martyrs, as well as the 4th century Bishop of Cagliari, had that name.
So while it is true that the verses in question refer to the devil, typologically,,it would be anachronistic to say that the word Lucifer only means that, because the words in those verses as originally written in Hebrew, and what Jesus Christ said in Aramaic, and the Greek original text of the New Testament and the Greek translation of the New Testament known as the Septuagint refer to the Morning Star, and it would make no sense for them to say “Lucifer” since that word is simply a Latin translation of the above, but the first Latin bible, the Vetus Latina, was not translated until the mid 2nd century, and in that same century Christians with the name Lucifer who hated the devil were put to death by the diabolical Pagan regime that ruled over the Roman Empire at the time, and won a crown of martyrdom in the process.
That being said, since the word Lucifer has developed a strong association with the devil, we should obviously no longer use it as a name for Christians.
But for that matter, many Christians are into fantasy that depicts dragons in a positive light, unaware of the fact that the word Dragon usually meant devil in various ancient languages. Indeed the name of Vlad the Impaler, the Romanian nobleman who went way over the top in his war with the Turks, and committed terrible attrocities no Christian should ever engage in, Vlad Dracul, while commonly translated in the West as “Vlad the Dragon” actually means, according to the Romanian Orthodox Christians I know, “Vlad the Devil.” And dragons were historically associated with the devil and the demons, and fantasy which glamorizes them such as Game of Thrones should not be embraced in a manner which has any positive regard for the demons.
Rather, ancient legends where a dragon is slayed by the hero, symbolizing overcoming the temptations and deceptions of the devil, are much better; I particularly like the legend of St. George slaying the dragon, as it symbolizes his real world struggle, for he was in reality an officer in the Roman Empire who embraced our Lord, God and Savior Jesus Christ and was martyred, but in so doing overcame the devil.
The main reason why I object to the anachronistic over-use of Lucifer is likewise because of those early Christian martyrs who had that name. I did once even post a thread about this issue.