It certainly can be.
Say you gave up first blood to... an Illaoi or a Darius. A strong bruiser champ with sustain. They got your 400g, plus extra farm while you're dead. On your first back, you got a longsword and a refillable potion, plus maybe boots or a red ward. On theirs, they got a Phage.
Should your jungler gank top next time your opponent is pushed up? These are champs noted for their 2v1 potential, especially if they've hit level 6. The jungler knows that you're numerically disadvantaged in a fight due to the early gold lead, and probably a less-skilled player than your lane opponent. This means that your jungler COULD attempt to help you with a gank, but is taking a very real risk of feeding 1-2 more kills to your lane opponent, ESPECIALLY if the enemy jungler is nearby. Is that a good risk to take? Arguably not. Giving up a double kill, or a single kill plus the enemy escaping, puts your team very far behind.