Question on my first moss poles

I filled my first moss poles with a 50/50 mix of moss and tree fern fiber. I ended up compacting it down so the pins would grab as I begin to train the plants to them. But now I'm wondering if it's too compacted? Will I encourage root rot?

Also, this poor syngonium! I noticed it was looking sad and when I went to pot onto pole I realized there were about 12 little plants in the pot and the roots were pretty dry. I chose the 3 with the most robust roots and they are on the pole. The others are repotted together.

The bleached color on the leaf in picture: is that just poor growing conditions or too much light? I'm doubtful about light because the other leaves are fine. I'm hoping it will perk up.

I'd appreciate your guidance. Thanks