Also, that article quotes Arnobius of Sicca as saying that Christians "do not build altars, do not offer the blood of creatures slain in sacrifices, incense, nor sacrificial meal." How are we supposed to interpret a quote like that if today in Orthodoxy we have all of the above except animal sacrifice?
In speaking of "altars", the writer probably means Roman altars which were specially designed for blood sacrifice.
The Christian use of incense is not an offering of a precious thing to God, but rather the incense symbolizes the rising of our prayers to God. This is how incense is depicted in Revelation and in the prayers used in censing.