Jiffy 7 Plugs. Are they garbage?

I bought a full bag of these starter plug. I germinate in a paper towel then plant into the plugs. Every seed I have put into these things have just frazzled with nute burn, they survive but the plugs must have to much feed in them unless I have had a bad batch. Anyhow I have binned them.

I only feed PH'd tap water @ 0.2 ec for the first few weeks. Anyone else had problems with them?

I use them but they are annoying sometimes I just plant in the soil in the pot aha fck it

Not entirely garbage but not very good either imo

Rapid Rooters.....I get nearly 100% germ rate.
Soak in water.
Squeeze out excess.
Place seed in hole.
Cover hole with a piece of rooter.
Put in a drawer. That's it.

Yeah they suck, Riot Rooters, Rapid rooters....